zai

(international standards) ISO 639-3 language code for Isthmus Zapotec.


yao

(international standards) ISO 639-2 & ISO 639-3 language code for Yao.


lun

(international standards) ISO 639-2 & ISO 639-3 language code for Lunda.


mao

(international standards) ISO 639-2/B language code for Māori.


chu

(international standards) ISO 639-2 & ISO 639-3 language code for Old Church Slavonic.


cai

(international standards) ISO 639-2 & ISO 639-5 language code for Central American Indian languages.


nai

(international standards) ISO 639-2 & ISO 639-5 language code for North American Indian languages.


yue

From Mandarin 粵／粤 (yuè), from 粵語／粤语 (yuèyǔ, “Cantonese language”).

(international standards) ISO 639-3 language code for Cantonese.


antonym(s) of “all except relative complement”

There are many theories regarding the origin of the minus sign. According to one theory, it originates from a handwriting form of the letter m (for minus) that came to resemble a horizontal bar, Another theory traces it back to a hieratic sign.

8 − 3 = 5

Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
Decomposition of 4 in the presence of cis-piperylene at room temperature results in the stereocontrolled formation of trans-cycloheptadiene 27 in 90% ee (96% ee at -78 °C).

−(−5) = 5

(mathematics) negative sign. "negative", "minus", "the opposite of"

(informal, slang) Less than, or “or less”.

{1,2,4} − {1,3,4} = {2}

(mathematics) Relative complement. "minus", "without".

lim _(x→a⁻)f(x) is the same as lim _(x↑a),f(x)

(medicine) rejective result from laboratory test


kua

(international standards) ISO 639-2 & ISO 639-3 language code for Kwanyama.


kui

(international standards) ISO 639-3 language code for Kuikúro.


œ

IPA

(superscript ⟨ꟹ⟩, IPA) [œ]-coloring or a weak, fleeting, epenthetic or echo [œ].

(superscript ⟨ꟹ⟩, VoQS) open-rounded labialization, less rounded than IPA ⟨ʷ⟩.


ï

(NAPA) a high back unrounded vowel (IPA [ɯ]).


m/s

(metrology) The symbol for metre per second, a unit of speed and velocity.


ü

(NAPA, UPA) a high front rounded vowel (IPA [y]).

(superscript ⟨ᵘ̈⟩, UPA) an extremely short or fleeting ü.

I'd be glad to go! All the best ü

An emoticon representing a face with a big smile.


MR

(metrology) Symbol for the megarayleigh, a unit of measurement of luminous flux, used to measure air glow.


MR

(metrology) Symbol for the megaröntgen (or megaroentgen), an obsolete unit of measurement of radio-active dose.


MR

(international standards) ISO 3166-1 alpha-2 country code for Mauritania.


MR

World Meteorological Organization country code for Martinique.


MR

Library of Congress MARC country code for Morocco.


ruo

(international standards) ISO 639-2 & ISO 639-3 language code for Istro-Romanian.


qu

(international standards) ISO 639-1 language code for Quechua.


ht

(international standards) ISO 639-1 language code for Haitian Creole.


CQ

International Organization for Standardization

w:ISO 3166-1 alpha-2#Exceptional reservations

(international standards) Exceptionally reserved ISO 3166-1 alpha-2 country code for Sark.


(international standards) ISO 269 standard paper size of 229 mm × 324 mm (9.02 in × 12.76 in), with a surface area of 742 cm² (115 sq in).


csch

(mathematics) The hyperbolic function hyperbolic cosecant.


(C)

The ASCII notation for the copyright symbol ©.


oj

(international standards) ISO 639-1 language code for Ojibwe.


xml

(international standards) ISO 639-3 language code for Malaysian Sign Language.


hom

(international standards) ISO 639-3 language code for Homa.


siz

(international standards) ISO 639-3 language code for Siwi.


XXL

(chiefly clothing) extra extra large (the manufactured size)


XS

(chiefly clothing) extra small (the manufactured size)


XXS

(chiefly clothing) extra extra small (the manufactured size)


LII

A Roman numeral representing fifty-two (52).


LIII

A Roman numeral representing fifty-three (53).


LU

(international standards) ISO 3166-1 alpha-2 country code for Luxembourg.


Exponential notation: 10³


LIE

(international standards) ISO 3166-1 alpha-3 country code for Liechtenstein.


ɰ

IPA

(superscript ⟨ᶭ⟩, IPA) [ɰ]-coloring, a [ɰ] on- or off-glide (diphthong), or a weak, fleeting or epenthetic [ɰ].


ɲ

IPA

May stand in for palatalized [nʲ]. In Spanish, it is represented by ñ.

(superscript ⟨ᶮ⟩, IPA) light to full [ɲ]-prenasalization, [ɲ]-release or light post-nasalization, [ɲ]-coloring or a weak, fleeting or epenthetic [ɲ].


ɳ

IPA

ᶏ ᶐ 𝼝 ᶗ ɖ𐞋 ᶑ𐞍 ꭦ𐞈 𝼙 ᶒ ᶕ ᶓ ᶔ ᶖ 𝼚 ʅ ɭᶩ ꞎ𐞝 𝼅𐞟 ɳᶯ 𝼛 Ɋɋ Ɽɽ𐞨 ɻʵ 𝼈𐞧 Ʂʂᶳ ᶘ Ʈʈ𐞯 𝼉 ꭧ𐞭 𝼜 ᶙ ʯ ʐᶼ ᶚ 𝼊𐞹

(superscript ⟨ᶯ⟩, IPA) light to full [ɳ]-prenasalization, [ɳ]-release or light post-nasalization, [ɳ]-coloring or a weak, fleeting or epenthetic [ɳ].


aT

magnetic flux density
magnetic flux density

(metrology) Symbol for attotesla, an SI unit of magnetic flux density equal to 10⁻¹⁸ teslas.


GHz

(metrology) Symbol for gigahertz, an SI unit of frequency equal to 10⁹ hertz.


nau

(international standards) ISO 639-2 & ISO 639-3 language code for Nauruan.


usi

(international standards) ISO 639-3 language code for Usui.


ewo

(international standards) ISO 639-2 & ISO 639-3 language code for Ewondo.


ade

(international standards) ISO 639-3 language code for Adele.


SV

(international standards) ISO 3166-1 alpha-2 country code for El Salvador.


avi

(international standards) ISO 639-3 language code for Avikam.


EAU

w:ISO 3166-1 alpha-2#Indeterminate reservations

(international standards) Indeterminately reserved ISO 3166-1 alpha-3 country code for Uganda.


tso

(international standards) ISO 639-2 & ISO 639-3 language code for Tsonga.


XDR

(international standards) ISO 4217 currency code for special drawing rights; a unit of account.


OM

(international standards) ISO 3166-1 alpha-2 country code for Oman.


efa

(international standards) ISO 639-3 language code for Efai.


mah

(international standards) ISO 639-2 & ISO 639-3 language code for Marshallese.


ġ

(romanization) used to transcribe the Arabic letter غ (ḡ).

(international standards) Transliterates Indic ग़ (or equivalents).


nyo

(international standards) ISO 639-2 & ISO 639-3 language code for Nyoro.


(finance) Short-term bond credit rating by Fitch Ratings, indicating that the issuer's ability to meet its obligations is very strong.


tvo

(international standards) ISO 639-3 language code for Tidore.


aN

(metrology) Symbol for attonewton, an SI unit of force equal to 10⁻¹⁸ newtons.


AN

Netherlands Antilles
Netherlands Antilles#English

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for the Netherlands Antilles from 1974 to 2010.


akat

(metrology) Symbol for attokatal, an SI unit of catalytic activity equal to 10⁻¹⁸ katals.


zen

(international standards) ISO 639-2 & ISO 639-3 language code for Zenaga.


○ and ◌⃝ for uses of a letter inside a circle

(phonetics) An unidentifiable or indeterminate open vowel.

Circle-A, a substitute for a symbol for anarchy or anarchism.


Double section sign indicating that reference to multiple sections will follow.


ld

Abbreviation of Latin logarithmus dualis.

log ₂(x)=ld(x). ld(2)=1

(computer science) binary logarithm; logarithm to the base 2


lg

(mathematics and computer science): Abbreviation of Latin logarithmus generalis.

lg (x)= log ₂(x). lg (2)=1

(computer science) binary logarithm; logarithm to the base 2.

lg (x)= log ₁₀(x). lg (10)=1

(international standards) ISO 639-1 language code for Luganda.


cau

(international standards) ISO 639-2 & ISO 639-5 language code for Caucasian languages.


dBmi

decibels milliwatts (in respect to) isotropic.


△ABC

A triangle with vertices named A, B, and C in order.

(entomology) A symbol to indicate that an illustration represent the underside of a specimen.

(shogi) a move by the 'white' shogi player

See Δ for the Greek capital letter delta.

(computing, dated) ISO 2047 symbol for Space


symmetric difference
symmetric difference

(set theory) A symbol representing symmetric difference.

(computing, dated) ISO 2047 symbol for Escape


T₂

International Union of Pure and Applied Chemistry

Tritium-tritium, an isotopic variant of the hydrogen molecule H₂; diatomic tritium.

(topology) The Hausdorff property; a category of topological spaces with this property.


kho

(international standards) ISO 639-2 & ISO 639-3 language code for Khotanese.


caa

(international standards) ISO 639-3 language code for Ch'orti.


chy

(international standards) ISO 639-2 & ISO 639-3 language code for Cheyenne.


ACA

(international standards, aviation) IATA airport code for General Juan N. Álvarez International Airport, which serves Acapulco, Guerrero, Mexico.


LCA

(international standards) ISO 3166-1 alpha-3 country code for Saint Lucia.


(uncommon) A data circuit that transmits at a rate of 6.312 megabits per second.


ABD

(international standards, aviation) IATA airport code for Abadan International Airport, which serves Abadan, Khuzestan, Iran.


ABR

(international standards, aviation) IATA airport code for Aberdeen Regional Airport, which serves Aberdeen, South Dakota, United States.


hup

(international standards) ISO 639-2 & ISO 639-3 language code for Hupa.


suq

(international standards) ISO 639-3 language code for Suri.


khi

(international standards) ISO 639-2 & ISO 639-5 language code for Khoisan languages.


mk

Likely from Abbreviation of Macedonian македонски (makedonski)

abbrev

Macedonian <i class="Cyrl mention" lang="mk">македонски</i> (makedonski)

(international standards) ISO 639-1 language code for Macedonian.


hA

(metrology) Symbol for hectoampere, an SI unit of electrical current equal to 10² amperes.


bul

(international standards) ISO 639-2 & ISO 639-3 language code for Bulgarian.


ASC

Ascension Island
Ascension Island#English

(international standards) Exceptionally reserved ISO 3166-1 alpha-3 country code for Ascension Island.


aio

(international standards) ISO 639-3 language code for Aiton.


More information
Invented by Louis Braille, braille cells were arranged in numerical order and assigned to the letters of the French alphabet. Most braille alphabets follow this assignment for the 26 letters of the basic Latin alphabet or, in non-Latin scripts, for the transliterations of those letters. In such alphabets, the first ten braille letters (the first decade: ⠁⠃⠉⠙⠑⠋⠛⠓⠊⠚) are assigned to the Latin letters A to J and to the digits 1 to 9 and 0. (Apart from '2', the even digits all have three dots: ⠃⠙⠋⠓⠚.)
The letters of the first decade are those cells with at least one dot in the top row and at least one in the left column, but none in the bottom row. The next decade repeat the pattern with the addition of a dot at the lower left, the third decade with two dots in the bottom row, and the fourth with a dot on the bottom right. The fifth decade is like the first, but shifted downward one row. The first decade is supplemented by the two characters with dots in the right column and none in the bottom row, and that supplement is propagated to the other decades using the generation rules above. Finally, there are four characters with no dots in the top two rows. Many languages that use braille letters beyond the 26 of the basic Latin alphabet follow an approximation of the English or French values for additional letters.

Braille eight-dot extensions from ⟨⠵⟩: ⡵ ⢵ ⣵


Braille eight-dot extensions from ⟨⠉⟩: ⡉ ⢉ ⣉


Braille eight-dot extensions from ⟨⠛⟩: ⡛ ⢛ ⣛


Braille eight-dot extensions from ⟨⠃⟩: ⡃ ⢃ ⣃


Braille eight-dot extensions from ⟨⠚⟩: ⡚ ⢚ ⣚


Braille eight-dot extensions from ⟨⠑⟩: ⡑ ⢑ ⣑


Braille eight-dot extensions from ⟨⠓⟩: ⡓ ⢓ ⣓


Braille eight-dot extensions from ⟨⠙⟩: ⡙ ⢙ ⣙


Braille eight-dot extensions from ⟨⠋⟩: ⡋ ⢋ ⣋


Braille eight-dot extensions from ⟨⠊⟩: ⡊ ⢊ ⣊


ღ

From the superficial similarity between this character and a heart.


š

(NAPA) a voiceless postalveolar fricative (IPA [ ʃ ]).


č

(NAPA) a voiceless postalveolar affricate (IPA [t͜ʃ ]).


CPT

Clipperton Island
Clipperton Island#English

(international standards) Exceptionally reserved ISO 3166-1 alpha-3 country code for Clipperton Island.


GPa

(metrology) Symbol for gigapascal, an SI unit of pressure and stress equal to 10⁹ pascals.


kN

(metrology) Symbol for kilonewton, an SI unit of force equal to 10³ newtons.


kHz

(metrology) Symbol for kilohertz, an SI unit of frequency equal to 10³ hertz.


mmol

(metrology) Symbol for millimole, an SI unit of amount of substance equal to 10⁻³ moles.


kA

(metrology) Symbol for kiloampere, an SI unit of electrical current equal to 10³ amperes.


LVII

A Roman numeral representing fifty-seven (57).


LVI

A Roman numeral representing fifty-six (56).


LVIII

A Roman numeral representing fifty-eight (58).


zos

(international standards) ISO 639-3 language code for Francisco León Zoque.


ↀ

* From Ⅽ and Ⅾ.
* An alteration of Ⓧ, from encircling X (the roman numeral for ten) to indicate the hundredth ten.

(archaic, Roman numerals) One thousand (1000).


(metrology) Symbol for nanoampere, an SI unit of electrical current equal to 10⁻⁹ amperes.


zau

(international standards) ISO 639-3 language code for Zangskari.


ÿ

(mathematics) The second-order differential of y, using Newtonian calculus notation; the y-component of the acceleration.


THz

(metrology) Symbol for terahertz, an SI unit of frequency equal to 10¹² hertz.


The various uses of the present symbol derive from several sources. The medieval virgule (Latin virgula) was an oblique or vertical line that served as a comma, period, and caesura mark and is still used in literary contexts to mark line breaks in verse. (This mark separately developed as the comma ⟨,⟩ and caesura mark ⟨‖⟩ and some senses of the vertical bar ⟨|⟩.) The shilling mark (Latin solidus) was variously written s. or as the long s ſ. This eventually developed into a single unpunctuated slash; its use to separate shillings from pence was sometimes generalized to any currency division. Most mathematical senses derived from the earlier horizontal fraction bar (as in 12, usually attributed to Arabic mathematician al-Hassar), rewritten with a slash by the 18th century to permit fractions to be written on a single line. As a separator and conjunction, it represents an oblique form of the dash ⟨–⟩ or hyphen ⟨-⟩. Its use to mark supposed actions derives from command formatting in online chat forums, while its use to comment on preceding text derives from its use in some programming languages to form closing tags. Its present British name stroke derives from its use in telegraphy; its present American name slash gained wide currency from its use in computing.

(mathematics) A single-line division sign, used with full-size numerals. See also ∕ (“division slash”).

(mathematics) A single-line fraction divider, used with full-size numerals. See also ⁄ (“fraction slash”).

(historical, numismatics) The currency sign for British, Irish, Kenyan, etc. shillings.

(orthography) typographic substitute for the dental click ⟨ǀ⟩.


hrm

(international standards) ISO 639-3 language code for Horned Miao.


keu

(international standards) ISO 639-3 language code for Akebu.


nV

(metrology) Symbol for nanovolt, an SI unit of electromotive force equal to 10⁻⁹ volts.


bua

(international standards) ISO 639-2 & ISO 639-3 language code for Buryat.


ʤ

IPA

(IPA, dated) a voiced postalveolar affricate [d͡ʒ].

(superscript ⟨𐞊⟩, IPA) a weak, fleeting or epenthetic [d͡ʒ].


ʧ

IPA

(IPA, dated) a voiceless postalveolar affricate [t͡ʃ ].

(superscript ⟨𐞮 ⟩, IPA) a weak, fleeting or epenthetic [t͡ʃ ].


hoj

(international standards) ISO 639-3 language code for Hadothi.


tah

(international standards) ISO 639-2 & ISO 639-3 language code for Tahitian.


arp

(international standards) ISO 639-2 & ISO 639-3 language code for Arapaho.


MLT

(international standards) ISO 3166-1 alpha-3 country code for Malta.


fak

(international standards) ISO 639-3 language code for Fang (Beboid).


cya

(international standards) ISO 639-3 language code for Nopala Chatino.


bla

(international standards) ISO 639-2 & ISO 639-3 language code for Blackfoot.


noj

(international standards) ISO 639-3 language code for Nonuya.


A remarkable feature of the accident was that the engine was 4-4-2 tank No. 13, the guard's brake was No. 13, and there were 13 wagons in the train.

1944 November and December, “Notes and News: Bufferstop Collisions in Northern Ireland”, in Railway Magazine, page 370:


ESB

(international standards, historical) ISO 4217 currency code for foreign-owned accounts in convertible Spanish pesetas; a unit of account used until 1993.


brk

(international standards) ISO 639-3 language code for Birgid.


^`lowbar`^

First used in 1986 in an online Deaf community in Japan, independently from :-). The difference between :-) and ^_^ is likely to come from Western and Eastern ways of looking at facial expressions.

lang

顔文字の起源 (^_^)

having now watched it I just have one thing to say... So who's got the bollocks to do some cosplay with me then? ^_^

2002 January 14, Stuart Dawson, “Re: This made me look at YATA in a whole new light.. o_o”, in uk.media.animation.anime (Usenet; in English):

She's very cute and talented but if she's really a smoker, she'll wind up looking old before her time. It would be a shame because I love her singing. ^_^

2015 November 1, Uncle Monster [username], “Re: OT: Another sure sign of a country in decline”, in alt.home.repair (Usenet; in English):

An emoticon representing a grinning face.


ɠ

IPA

(superscript ⟨𐞓 ⟩, IPA) [ɠ ]-release, [ɠ ]-coloring, or a weak, fleeting or epenthetic [ɠ ].


BH

(international standards) ISO 3166-1 alpha-2 country code for Bahrain.


loj

(international standards) ISO 639-3 language code for Lou.


(music) Two sixteenth notes connected with a beam.


(music) Two eighth notes connected with a beam.


(chiefly Japan) A map indication of a hot spring.


Generic symbol for a product-like operation, usually paired with addition-like operation ⊞, to distinguish it from product denoted by ⋅ (middle dot).


(logic) A contradiction; a truth value corresponding to false.

(algebra) The bottom element of a lattice.

(type theory) The bottom type of a type system.

(computing, dated) The ISO 2047 symbol for Start of Text.


Technically, this should be red: ◎. May also be typeset ⊚ or ⦾, depending on which character matches the size of the other elements.

(chemistry, Daltonian symbol, obsolete) calcium ("lime")

(cryptocurrencies) The symbol for cryptocurrency Solana.


(linguistics) Extended diacritic symbol used in old Cyrillic manuscripts, e.g. in Old Church Slavonic language, indicating abbreviations, or letters used as numerals.


head

҅ (name spiritus asper or dasy pneuma or dasia)

spiritus asper (name)
dasy pneuma (name)
dasia (name)

(linguistics) Rough breathing mark; used in the early Cyrillic alphabet when writing the Old Church Slavonic language.


҆ (name spiritus lenis or psilon pneuma or psilí or zvatel'tse)

spiritus lenis (name)
psilon pneuma (name)
psilí (name)
zvatel'tse (name)

(linguistics) Soft breathing mark; used in the early Cyrillic and Glagolitic alphabets when writing the Old Church Slavonic language.


избавитєл҄ь (palatalized л = /lʲ/)

The kamora, a symbol indicating palatalization of the base consonant in the ustav manuscript tradition of the Early Cyrillic alphabet.


cmol

(metrology) Symbol for centimole, an SI unit of amount of substance equal to 10⁻² moles.


cA

(metrology) Symbol for centiampere, an SI unit of electrical current equal to 10⁻² amperes.


fA

(metrology) Symbol for femtoampere, an SI unit of electrical current equal to 10⁻¹⁵ amperes.


SHE

(international standards, aviation) IATA airport code for Shenyang Taoxian International Airport, which serves Shenyang,, Liaoning, China.


ahs

(international standards) ISO 639-3 language code for Ashe.


[I]t is standard in American television and motion pictures to use 'fictiona' telephone numbers. [... But] a standard mention of a '555' number never generates the fictional truth that the number in question begins with '555'. It leaves the number in question fictionally indeterminate. … The X-Files mentions at least forty-seven '555' numbers, and no other kind … in different cities, states, and locales [...but] it's no part of [the] story that the first three digits of all these phone numbers coincide

that would itself be worthy of an 'X-File'. The '555' number, in a standard mention, is a convention device for communicating the (fictional) fact that someone reveals a phone number, without stipulating what that number is.

Fictional telephone number prefix widely used in North American television shows, films, and other media.


SBD

(international standards) ISO 4217 currency code for the Solomon Islands dollar.


如圖2.1-7，△ABC及△DEF兩三角形全等，△ABC ≅ △DEF。

2017, 專門用來打好幾何基礎的數學課本 [A mathematics textbook designed to build a good foundation in geometry], volume 1 (in Chinese), Wu-Nan Book Inc., →ISBN, page 95:

As shown in Figure 2.1-7, △ABC and △DEF are two congruent triangles, △ABC ≅ △DEF.

Suppose that G ≅ H. Then there exists an isomorphism f, say, from G to H.

2011 May 5, Clive Reis, Abstract Algebra: An Introduction To Groups, Rings And Fields (in English), World Scientific Publishing Company, →ISBN, page 137:

(algebra, category theory, logic) Isomorphic to.


DCA

(international standards, aviation) IATA airport code for Ronald Reagan Washington National Airport, which serves Washington, D.C., United States.


iba

(international standards) ISO 639-2 & ISO 639-3 language code for Iban.


į

(phonetics) A nasal vowel [i]. The norm in Americanist notation; sometimes used in IPA transcription to leave room over the vowel letter for tone diacritics.


sef

(international standards) ISO 639-3 language code for Cebaara Senoufo.


moj

(international standards) ISO 639-3 language code for Monzombo.


BOE

(international standards, aviation) IATA airport code for Boundji Airport, which serves Boundji, Republic of the Congo.


tyv

(international standards) ISO 639-2 & ISO 639-3 language code for Tuvan.


TAN

(international standards, aviation) IATA airport code for Taunton Municipal Airport, which serves Taunton, Massachusetts, United States.


LOS

(international standards, aviation) IATA airport code for Murtala Muhammed International Airport, which serves Lagos, Nigeria.


hea

(international standards) ISO 639-3 language code for Northern Qiandong Miao.


kes

(international standards) ISO 639-3 language code for Kugbo.


kac

(international standards) ISO 639-2 & ISO 639-3 language code for Jingpho.


gju

(international standards) ISO 639-3 language code for Gojri.


DG

(international standards) Exceptionally reserved ISO 3166-1 alpha-2 country code for Diego Garcia.


EG

(international standards) ISO 3166-1 alpha-2 country code for Egypt.


WG

(international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for Grenada.


TG

(international standards) ISO 3166-1 alpha-2 country code for Togo.


syd

(international standards) ISO 639-5 language code for Samoyedic languages.


cosech

Alternative form of csch (“hyperbolic cosecant”)


ℂ

(mathematics) The set of complex numbers.

(mathematics) This set, equipped with any of its standard structure.


CY

(international standards) ISO 3166-1 alpha-2 country code for Cyprus.


BZ

(international standards) ISO 3166-1 alpha-2 country code for Belize.


GY

(international standards) ISO 3166-1 alpha-2 country code for Guyana.


FJ

(international standards) ISO 3166-1 alpha-2 country code for Fiji.


CZ

(international standards) ISO 3166-1 alpha-2 country code for the Czech Republic since 1993.


JM

(international standards) ISO 3166-1 alpha-2 country code for Jamaica.


LK

(international standards) ISO 3166-1 alpha-2 country code for Sri Lanka.


KE

(international standards) ISO 3166-1 alpha-2 country code for Kenya.


MZ

(international standards) ISO 3166-1 alpha-2 country code for Mozambique.


KN

Saint Kitts and Nevis
Saint Kitts and Nevis#English

(international standards) ISO 3166-1 alpha-2 country code for Saint Kitts and Nevis since 1983.

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for Saint Christopher-Nevis-Anguilla from 1974 to 1983.


KW

(international standards) ISO 3166-1 alpha-2 country code for Kuwait.


HU

(international standards) ISO 3166-1 alpha-2 country code for Hungary.


LY

(international standards) ISO 3166-1 alpha-2 country code for Libya.


FI

(international standards) ISO 3166-1 alpha-2 country code for Finland.


SZ

(international standards) ISO 3166-1 alpha-2 country code for Eswatini.


HN

(international standards) ISO 3166-1 alpha-2 country code for Honduras.


SY

(international standards) ISO 3166-1 alpha-2 country code for Syria.


KH

(chemistry) The molecular formula for potassium hydride.


KH

(international standards) ISO 3166-1 alpha-2 country code for Cambodia.


UY

(international standards) ISO 3166-1 alpha-2 country code for Uruguay.


PY

(international standards) ISO 3166-1 alpha-2 country code for Paraguay.


GN

(metrology) Symbol for giganewton, an SI unit of force equal to 10⁹ newtons.


GN

(international standards) ISO 3166-1 alpha-2 country code for Guinea.


UZ

(international standards) ISO 3166-1 alpha-2 country code for Uzbekistan since 1992.


VE

(international standards) ISO 3166-1 alpha-2 country code for Venezuela.


MY

(international standards) ISO 3166-1 alpha-2 country code for Malaysia.


EE

(international standards) ISO 3166-1 alpha-2 country code for Estonia since 1992.


ZM

(international standards) ISO 3166-1 alpha-2 country code for Zambia.


MU

(international standards) ISO 3166-1 alpha-2 country code for Mauritius.


VU

(international standards) ISO 3166-1 alpha-2 country code for Vanuatu since 1980.

(IUCN Red List) Abbreviation of Vulnerable.


RU

(international standards) ISO 3166-1 alpha-2 country code for Russia since 1992.

rack unit, the unit of length defined as 1.75 inches


BN

(international standards) ISO 3166-1 alpha-2 country code for Brunei.


FR

(international standards) ISO 3166-1 alpha-2 country code for France.


YE

(international standards) ISO 3166-1 alpha-2 country code for Yemen since 1990.

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for North Yemen from 1974 to 1990.


GW

(metrology) Symbol for gigawatt, an SI unit of power equal to 10⁹ watts.


GW

(international standards) ISO 3166-1 alpha-2 country code for Guinea-Bissau.


CF

Central African Republic
Central African Republic#English

(international standards) ISO 3166-1 alpha-2 country code for the Central African Republic.


LS

(international standards) ISO 3166-1 alpha-2 country code for Lesotho.


LB

(international standards) ISO 3166-1 alpha-2 country code for Lebanon.


KR

(international standards) ISO 3166-1 alpha-2 country code for South Korea.


BCN

(international standards, aviation) IATA airport code for Barcelona El Prat Airport, which serves Barcelona, Spain.


RW

(international standards) ISO 3166-1 alpha-2 country code for Rwanda.


SG

(international standards) ISO 3166-1 alpha-2 country code for Singapore.


MEX

(international standards) ISO 3166-1 alpha-3 country code for Mexico.


KZ

(international standards) ISO 3166-1 alpha-2 country code for Kazakhstan since 1992.


UA

ISO 3166
Soviet Union
Ukrainian Soviet Socialist Republic
United Nations

(international standards) ISO 3166-1 alpha-2 country code for Ukraine since 1992.

Ukrainian Soviet Socialist Republic#English

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for the Ukrainian Soviet Socialist Republic from 1974 to 1992.


ST

São Tomé and Príncipe
São Tomé and Príncipe#English

(international standards) ISO 3166-1 alpha-2 country code for São Tomé and Príncipe.


LR

(international standards) ISO 3166-1 alpha-2 country code for Liberia.


TH

electrical inductance
electrical inductance

(metrology) Symbol for terahenry, an SI unit of electrical inductance equal to 10¹² henrys.


TH

(international standards) ISO 3166-1 alpha-2 country code for Thailand.


VN

(international standards) ISO 3166-1 alpha-2 country code for Vietnam since 1976.

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for South Vietnam from 1974 to 1976.


TJ

(metrology) Symbol for terajoule, an SI unit of work or energy equal to 10¹² joules.


TJ

(international standards) ISO 3166-1 alpha-2 country code for Tajikistan since 1992.


GRO

(international standards, aviation) IATA airport code for Girona–Costa Brava Airport, which serves Girona, Catalonia, Spain.


DZ

Taken from Berber ⴷⵣⴰⵢⵔ (dzayr) (ISO code).

(international standards) ISO 3166-1 alpha-2 country code for Algeria.


rab

(international standards) ISO 639-3 language code for Chamling.


BG

(international standards) ISO 3166-1 alpha-2 country code for Bulgaria.


NG

(international standards) ISO 3166-1 alpha-2 country code for Nigeria.


mys

(international standards) ISO 639-3 language code for Mesmes.


SPM

Saint Pierre and Miquelon
Saint Pierre and Miquelon#English

(international standards) ISO 3166-1 alpha-3 country code for Saint Pierre and Miquelon.


COM

(international standards) ISO 3166-1 alpha-3 country code for the Comoros.


ﭏ

Ligature of the letters א and ל, mostly used in writing or typesetting Judeo-Arabic and Ladino, but sometimes also used for Hebrew.


(programming) Decrement by 1 in certain programming languages such as C and Java.

if pizza == "plain cheese" -- Checks if pizza is "plain cheese".

SELECT id, name, birth_date -- Selects fields from a table.

programming language
programming language#English

(programming) Starts a single-line comment in some programming languages, including Ada, Haskell, and Lua, as well as some query languages.


dA

(metrology) Symbol for deciampere, an SI unit of electrical current equal to 10⁻¹ amperes.


yA

(metrology) Symbol for yoctoampere, an SI unit of electrical current equal to 10⁻²⁴ amperes.


DEM

(international standards, historical) ISO 4217 currency code for the former Deutsche Mark; a currency used from 1948 to 2002.


GBP

(international standards) ISO 4217 currency code for the British pound sterling.


^W

control character
control character#English

(computing) The ASCII control character end of transmission block in caret notation.


^H

(computing) The ASCII control character backspace in caret notation.


aC

(metrology) Symbol for attocoulomb, an SI unit of electric charge equal to 10⁻¹⁸ coulombs.


aL

(metrology) Symbol for attoliter, an SI unit of fluid measure equal to 10⁻¹⁸ liters.


nK

(metrology) Symbol for nanokelvin, an SI unit of temperature equal to 10⁻⁹ kelvins.


aS

electrical conductance
electrical conductance

(metrology) Symbol for attosiemens, an SI unit of electrical conductance equal to 10⁻¹⁸ siemens.


wuv

(international standards) ISO 639-3 language code for Wuvulu-Aua.


ZHz

(metrology) Symbol for zettahertz, an SI unit of frequency equal to 10²¹ hertz.


Mkat

(metrology) Symbol for megakatal, an SI unit of catalytic activity equal to 10⁶ katals.


hkat

(metrology) Symbol for hectokatal, an SI unit of catalytic activity equal to 10² katals.


Pkat

(metrology) Symbol for petakatal, an SI unit of catalytic activity equal to 10¹⁵ katals.


Gkat

(metrology) Symbol for gigakatal, an SI unit of catalytic activity equal to 10⁹ katals.


Ykat

(metrology) Symbol for yottakatal, an SI unit of catalytic activity equal to 10²⁴ katals.


Zkat

(metrology) Symbol for zettakatal, an SI unit of catalytic activity equal to 10²¹ katals.


fkat

(metrology) Symbol for femtokatal, an SI unit of catalytic activity equal to 10⁻¹⁵ katals.


pkat

(metrology) Symbol for picokatal, an SI unit of catalytic activity equal to 10⁻¹² katals.


kkat

(metrology) Symbol for kilokatal, an SI unit of catalytic activity equal to 10³ katals.


ckat

(metrology) Symbol for centikatal, an SI unit of catalytic activity equal to 10⁻² katals.


Tkat

(metrology) Symbol for terakatal, an SI unit of catalytic activity equal to 10¹² katals.


nkat

(metrology) Symbol for nanokatal, an SI unit of catalytic activity equal to 10⁻⁹ katals.


mkat

(metrology) Symbol for millikatal, an SI unit of catalytic activity equal to 10⁻³ katals.


dkat

(metrology) Symbol for decikatal, an SI unit of catalytic activity equal to 10⁻¹ katals.


μkat

(metrology) Symbol for microkatal, an SI unit of catalytic activity equal to 10⁻⁶ katals.


zkat

(metrology) Symbol for zeptokatal, an SI unit of catalytic activity equal to 10⁻²¹ katals.


pS

(metrology) Symbol for picosiemens, an SI unit of electrical conductance equal to 10⁻¹² siemens.


dakat

(metrology) Symbol for decakatal, an SI unit of catalytic activity equal to 10¹ katals.


μS

(metrology) Symbol for microsiemens, an SI unit of electrical conductance equal to 10⁻⁶ siemens.


Ekat

(metrology) Symbol for exakatal, an SI unit of catalytic activity equal to 10¹⁸ katals.


ykat

(metrology) Symbol for yoctokatal, an SI unit of catalytic activity equal to 10⁻²⁴ katals.


Yl

(metrology) Symbol for yottaliter (yottalitre), an SI unit of fluid measure equal to 10²⁴ liters (litres).


zl

(metrology) Symbol for zeptoliter (zeptolitre), an SI unit of fluid measure equal to 10⁻²¹ liters (litres).

zeptoliter

(General Alphabet of Cameroon Languages) a voiced lateral fricative (IPA [ɮ]).


μl

(metrology) Symbol for microliter (microlitre), an SI unit of fluid measure equal to 10⁻⁶ liters (litres).


Gl

(metrology) Symbol for gigaliter (gigalitre), an SI unit of fluid measure equal to 10⁹ liters (litres).


yl

(metrology) Symbol for yoctoliter (yoctolitre), an SI unit of fluid measure equal to 10⁻²⁴ liters (litres).


pHz

(metrology) Symbol for picohertz, an SI unit of frequency equal to 10⁻¹² hertz.


fHz

(metrology) Symbol for femtohertz, an SI unit of frequency equal to 10⁻¹⁵ hertz.


hS

(metrology) Symbol for hectosiemens, an SI unit of electrical conductance equal to 10² siemens.


dS

(metrology) Symbol for decisiemens, an SI unit of electrical conductance equal to 10⁻¹ siemens.


Emol

(metrology) Symbol for examole, an SI unit of amount of substance equal to 10¹⁸ moles.


PHz

(metrology) Symbol for petahertz, an SI unit of frequency equal to 10¹⁵ hertz.


yS

(metrology) Symbol for yoctosiemens, an SI unit of electrical conductance equal to 10⁻²⁴ siemens.


hHz

(metrology) Symbol for hectohertz, an SI unit of frequency equal to 10² hertz.


nHz

(metrology) Symbol for nanohertz, an SI unit of frequency equal to 10⁻⁹ hertz.


ZS

(metrology) Symbol for zettasiemens, an SI unit of electrical conductance equal to 10²¹ siemens.


daS

(metrology) Symbol for decasiemens, an SI unit of electrical conductance equal to 10¹ siemens.


YS

(metrology) Symbol for yottasiemens, an SI unit of electrical conductance equal to 10²⁴ siemens.


zHz

(metrology) Symbol for zeptohertz, an SI unit of frequency equal to 10⁻²¹ hertz.


zS

(metrology) Symbol for zeptosiemens, an SI unit of electrical conductance equal to 10⁻²¹ siemens.


aHz

(metrology) Symbol for attohertz, an SI unit of frequency equal to 10⁻¹⁸ hertz.


cHz

(metrology) Symbol for centihertz, an SI unit of frequency equal to 10⁻² hertz.


fS

(metrology) Symbol for femtosiemens, an SI unit of electrical conductance equal to 10⁻¹⁵ siemens.


nmol

(metrology) Symbol for nanomole, an SI unit of amount of substance equal to 10⁻⁹ moles.


Gmol

(metrology) Symbol for gigamole, an SI unit of amount of substance equal to 10⁹ moles.


kmol

(metrology) Symbol for kilomole, an SI unit of amount of substance equal to 10³ moles.


cS

(metrology) Symbol for centisiemens, an SI unit of electrical conductance equal to 10⁻² siemens.


yHz

(metrology) Symbol for yoctohertz, an SI unit of frequency equal to 10⁻²⁴ hertz.


EHz

(metrology) Symbol for exahertz, an SI unit of frequency equal to 10¹⁸ hertz.


nS

(metrology) Symbol for nanosiemens, an SI unit of electrical conductance equal to 10⁻⁹ siemens.


Ymol

(metrology) Symbol for yottamole, an SI unit of amount of substance equal to 10²⁴ moles.


cH

(metrology) Symbol for centihenry, an SI unit of electrical inductance equal to 10⁻² henrys.


hmol

(metrology) Symbol for hectomole, an SI unit of amount of substance equal to 10² moles.


YHz

(metrology) Symbol for yottahertz, an SI unit of frequency equal to 10²⁴ hertz.


Pmol

(metrology) Symbol for petamole, an SI unit of amount of substance equal to 10¹⁵ moles.


dmol

(metrology) Symbol for decimole, an SI unit of amount of substance equal to 10⁻¹ moles.


daHz

(metrology) Symbol for decahertz, an SI unit of frequency equal to 10¹ hertz.


Zmol

(metrology) Symbol for zettamole, an SI unit of amount of substance equal to 10²¹ moles.


dHz

(metrology) Symbol for decihertz, an SI unit of frequency equal to 10⁻¹ hertz.


Tmol

(metrology) Symbol for teramole, an SI unit of amount of substance equal to 10¹² moles.


μmol

(metrology) Symbol for micromole, an SI unit of amount of substance equal to 10⁻⁶ moles.


nΩ

electrical resistance
electrical resistance

(metrology) Symbol for nanoohm, an SI unit of electrical resistance equal to 10⁻⁹ ohms.


mΩ

(metrology) Symbol for milliohm, an SI unit of electrical resistance equal to 10⁻³ ohms.


ymol

(metrology) Symbol for yoctomole, an SI unit of amount of substance equal to 10⁻²⁴ moles.


aΩ

(metrology) Symbol for attoohm, an SI unit of electrical resistance equal to 10⁻¹⁸ ohms.


pΩ

(metrology) Symbol for picoohm, an SI unit of electrical resistance equal to 10⁻¹² ohms.


yΩ

(metrology) Symbol for yoctoohm, an SI unit of electrical resistance equal to 10⁻²⁴ ohms.


MΩ

(metrology) Symbol for megaohm, an SI unit of electrical resistance equal to 10⁶ ohms.


hΩ

(metrology) Symbol for hectoohm, an SI unit of electrical resistance equal to 10² ohms.


kΩ

(metrology) Symbol for kiloohm, an SI unit of electrical resistance equal to 10³ ohms.


pmol

(metrology) Symbol for picomole, an SI unit of amount of substance equal to 10⁻¹² moles.


damol

(metrology) Symbol for decamole, an SI unit of amount of substance equal to 10¹ moles.


PΩ

(metrology) Symbol for petaohm, an SI unit of electrical resistance equal to 10¹⁵ ohms.


GΩ

(metrology) Symbol for gigaohm, an SI unit of electrical resistance equal to 10⁹ ohms.


dΩ

(metrology) Symbol for deciohm, an SI unit of electrical resistance equal to 10⁻¹ ohms.


daΩ

(metrology) Symbol for decaohm, an SI unit of electrical resistance equal to 10¹ ohms.


EΩ

(metrology) Symbol for exaohm, an SI unit of electrical resistance equal to 10¹⁸ ohms.


fΩ

(metrology) Symbol for femtoohm, an SI unit of electrical resistance equal to 10⁻¹⁵ ohms.


μΩ

(metrology) Symbol for microohm, an SI unit of electrical resistance equal to 10⁻⁶ ohms.


YΩ

(metrology) Symbol for yottaohm, an SI unit of electrical resistance equal to 10²⁴ ohms.


cΩ

(metrology) Symbol for centiohm, an SI unit of electrical resistance equal to 10⁻² ohms.


TΩ

(metrology) Symbol for teraohm, an SI unit of electrical resistance equal to 10¹² ohms.


fmol

(metrology) Symbol for femtomole, an SI unit of amount of substance equal to 10⁻¹⁵ moles.


Mmol

(metrology) Symbol for megamole, an SI unit of amount of substance equal to 10⁶ moles.


zmol

(metrology) Symbol for zeptomole, an SI unit of amount of substance equal to 10⁻²¹ moles.


kS

(metrology) Symbol for kilosiemens, an SI unit of electrical conductance equal to 10³ siemens.

kilosiemens

(metrology, electronics) Symbol for the kilosample, a unit equal to 10³ samples.


amol

(metrology) Symbol for attomole, an SI unit of amount of substance equal to 10⁻¹⁸ moles.


EN

(metrology) Symbol for exanewton, an SI unit of force equal to 10¹⁸ newtons.

exanewton

(IUCN Red List) Abbreviation of Endangered.


μHz

(metrology) Symbol for microhertz, an SI unit of frequency equal to 10⁻⁶ hertz.


gus

(international standards) ISO 639-3 language code for Guinean Sign Language.


mSv

(metrology) Symbol for millisievert, an SI unit of radiation dose equal to 10⁻³ sieverts.


ESv

(metrology) Symbol for exasievert, an SI unit of radiation dose equal to 10¹⁸ sieverts.


ZSv

(metrology) Symbol for zettasievert, an SI unit of radiation dose equal to 10²¹ sieverts.


fSv

(metrology) Symbol for femtosievert, an SI unit of radiation dose equal to 10⁻¹⁵ sieverts.


YSv

(metrology) Symbol for yottasievert, an SI unit of radiation dose equal to 10²⁴ sieverts.


pSv

(metrology) Symbol for picosievert, an SI unit of radiation dose equal to 10⁻¹² sieverts.


PSv

(metrology) Symbol for petasievert, an SI unit of radiation dose equal to 10¹⁵ sieverts.


GSv

(metrology) Symbol for gigasievert, an SI unit of radiation dose equal to 10⁹ sieverts.


aSv

(metrology) Symbol for attosievert, an SI unit of radiation dose equal to 10⁻¹⁸ sieverts.


kSv

(metrology) Symbol for kilosievert, an SI unit of radiation dose equal to 10³ sieverts.


ySv

(metrology) Symbol for yoctosievert, an SI unit of radiation dose equal to 10⁻²⁴ sieverts.


TSv

(metrology) Symbol for terasievert, an SI unit of radiation dose equal to 10¹² sieverts.


nSv

(metrology) Symbol for nanosievert, an SI unit of radiation dose equal to 10⁻⁹ sieverts.


zSv

(metrology) Symbol for zeptosievert, an SI unit of radiation dose equal to 10⁻²¹ sieverts.


dSv

(metrology) Symbol for decisievert, an SI unit of radiation dose equal to 10⁻¹ sieverts.


cSv

(metrology) Symbol for centisievert, an SI unit of radiation dose equal to 10⁻² sieverts.


μSv

(metrology) Symbol for microsievert, an SI unit of radiation dose equal to 10⁻⁶ sieverts.


daSv

(metrology) Symbol for decasievert, an SI unit of radiation dose equal to 10¹ sieverts.


MSv

(metrology) Symbol for megasievert, an SI unit of radiation dose equal to 10⁶ sieverts.


hSv

(metrology) Symbol for hectosievert, an SI unit of radiation dose equal to 10² sieverts.


mGy

(metrology) Symbol for milligray, an SI unit of absorbed dose equal to 10⁻³ grays.


nGy

(metrology) Symbol for nanogray, an SI unit of absorbed dose equal to 10⁻⁹ grays.


hGy

(metrology) Symbol for hectogray, an SI unit of absorbed dose equal to 10² grays.


pGy

(metrology) Symbol for picogray, an SI unit of absorbed dose equal to 10⁻¹² grays.


yGy

(metrology) Symbol for yoctogray, an SI unit of absorbed dose equal to 10⁻²⁴ grays.


dGy

(metrology) Symbol for decigray, an SI unit of absorbed dose equal to 10⁻¹ grays.


MGy

(metrology) Symbol for megagray, an SI unit of absorbed dose equal to 10⁶ grays.


daGy

(metrology) Symbol for decagray, an SI unit of absorbed dose equal to 10¹ grays.


GGy

(metrology) Symbol for gigagray, an SI unit of absorbed dose equal to 10⁹ grays.


cGy

(metrology) Symbol for centigray, an SI unit of absorbed dose equal to 10⁻² grays.


kGy

(metrology) Symbol for kilogray, an SI unit of absorbed dose equal to 10³ grays.


fGy

(metrology) Symbol for femtogray, an SI unit of absorbed dose equal to 10⁻¹⁵ grays.


aGy

(metrology) Symbol for attogray, an SI unit of absorbed dose equal to 10⁻¹⁸ grays.


PGy

(metrology) Symbol for petagray, an SI unit of absorbed dose equal to 10¹⁵ grays.


μGy

(metrology) Symbol for microgray, an SI unit of absorbed dose equal to 10⁻⁶ grays.


TGy

(metrology) Symbol for teragray, an SI unit of absorbed dose equal to 10¹² grays.


YGy

(metrology) Symbol for yottagray, an SI unit of absorbed dose equal to 10²⁴ grays.


ZGy

(metrology) Symbol for zettagray, an SI unit of absorbed dose equal to 10²¹ grays.


EGy

(metrology) Symbol for exagray, an SI unit of absorbed dose equal to 10¹⁸ grays.


mF

(metrology) Symbol for millifarad, an SI unit of electrical capacitance equal to 10⁻³ farads.


zGy

(metrology) Symbol for zeptogray, an SI unit of absorbed dose equal to 10⁻²¹ grays.


pBq

(metrology) Symbol for picobecquerel, an SI unit of radioactivity equal to 10⁻¹² becquerels.


zBq

(metrology) Symbol for zeptobecquerel, an SI unit of radioactivity equal to 10⁻²¹ becquerels.


yBq

(metrology) Symbol for yoctobecquerel, an SI unit of radioactivity equal to 10⁻²⁴ becquerels.


ZBq

(metrology) Symbol for zettabecquerel, an SI unit of radioactivity equal to 10²¹ becquerels.


PBq

(metrology) Symbol for petabecquerel, an SI unit of radioactivity equal to 10¹⁵ becquerels.


fBq

(metrology) Symbol for femtobecquerel, an SI unit of radioactivity equal to 10⁻¹⁵ becquerels.


YBq

(metrology) Symbol for yottabecquerel, an SI unit of radioactivity equal to 10²⁴ becquerels.


nBq

(metrology) Symbol for nanobecquerel, an SI unit of radioactivity equal to 10⁻⁹ becquerels.


EBq

(metrology) Symbol for exabecquerel, an SI unit of radioactivity equal to 10¹⁸ becquerels.


hBq

(metrology) Symbol for hectobecquerel, an SI unit of radioactivity equal to 10² becquerels.


aBq

(metrology) Symbol for attobecquerel, an SI unit of radioactivity equal to 10⁻¹⁸ becquerels.


μBq

(metrology) Symbol for microbecquerel, an SI unit of radioactivity equal to 10⁻⁶ becquerels.


TBq

(metrology) Symbol for terabecquerel, an SI unit of radioactivity equal to 10¹² becquerels.


kBq

(metrology) Symbol for kilobecquerel, an SI unit of radioactivity equal to 10³ becquerels.


mBq

(metrology) Symbol for millibecquerel, an SI unit of radioactivity equal to 10⁻³ becquerels.


daBq

(metrology) Symbol for decabecquerel, an SI unit of radioactivity equal to 10¹ becquerels.


MBq

(metrology) Symbol for megabecquerel, an SI unit of radioactivity equal to 10⁶ becquerels.


cBq

(metrology) Symbol for centibecquerel, an SI unit of radioactivity equal to 10⁻² becquerels.


GBq

(metrology) Symbol for gigabecquerel, an SI unit of radioactivity equal to 10⁹ becquerels.


dBq

(metrology) Symbol for decibecquerel, an SI unit of radioactivity equal to 10⁻¹ becquerels.


Mlx

(metrology) Symbol for megalux, an SI unit of illumination equal to 10⁶ lux.


hlx

(metrology) Symbol for hectolux, an SI unit of illumination equal to 10² lux.


klx

(metrology) Symbol for kilolux, an SI unit of illumination equal to 10³ lux.


Plx

(metrology) Symbol for petalux, an SI unit of illumination equal to 10¹⁵ lux.


mlx

(metrology) Symbol for millilux, an SI unit of illumination equal to 10⁻³ lux.


plx

(metrology) Symbol for picolux, an SI unit of illumination equal to 10⁻¹² lux.


nlx

(metrology) Symbol for nanolux, an SI unit of illumination equal to 10⁻⁹ lux.


Zlx

(metrology) Symbol for zettalux, an SI unit of illumination equal to 10²¹ lux.


Glx

(metrology) Symbol for gigalux, an SI unit of illumination equal to 10⁹ lux.


Tlx

(metrology) Symbol for teralux, an SI unit of illumination equal to 10¹² lux.


dalx

(metrology) Symbol for decalux, an SI unit of illumination equal to 10¹ lux.


dlx

(metrology) Symbol for decilux, an SI unit of illumination equal to 10⁻¹ lux.


flx

(metrology) Symbol for femtolux, an SI unit of illumination equal to 10⁻¹⁵ lux.


clx

(metrology) Symbol for centilux, an SI unit of illumination equal to 10⁻² lux.


zlx

(metrology) Symbol for zeptolux, an SI unit of illumination equal to 10⁻²¹ lux.


μlx

(metrology) Symbol for microlux, an SI unit of illumination equal to 10⁻⁶ lux.


ylx

(metrology) Symbol for yoctolux, an SI unit of illumination equal to 10⁻²⁴ lux.


lx

Symbol for the lux, an SI unit of illumination.


alx

(metrology) Symbol for attolux, an SI unit of illumination equal to 10⁻¹⁸ lux.


Ylx

(metrology) Symbol for yottalux, an SI unit of illumination equal to 10²⁴ lux.


afr

(international standards) ISO 639-2 & ISO 639-3 language code for Afrikaans.


Zlm

(metrology) Symbol for zettalumen, an SI unit of luminous flux equal to 10²¹ lumens.


Ylm

(metrology) Symbol for yottalumen, an SI unit of luminous flux equal to 10²⁴ lumens.


Mlm

(metrology) Symbol for megalumen, an SI unit of luminous flux equal to 10⁶ lumens.


Tlm

(metrology) Symbol for teralumen, an SI unit of luminous flux equal to 10¹² lumens.


nlm

(metrology) Symbol for nanolumen, an SI unit of luminous flux equal to 10⁻⁹ lumens.


Glm

(metrology) Symbol for gigalumen, an SI unit of luminous flux equal to 10⁹ lumens.


μlm

(metrology) Symbol for microlumen, an SI unit of luminous flux equal to 10⁻⁶ lumens.


dlm

(metrology) Symbol for decilumen, an SI unit of luminous flux equal to 10⁻¹ lumens.


zlm

(metrology) Symbol for zeptolumen, an SI unit of luminous flux equal to 10⁻²¹ lumens.


Plm

(metrology) Symbol for petalumen, an SI unit of luminous flux equal to 10¹⁵ lumens.


ylm

(metrology) Symbol for yoctolumen, an SI unit of luminous flux equal to 10⁻²⁴ lumens.


mlm

(international standards) ISO 639-3 language code for Mulam.

(metrology) Symbol for millilumen, an SI unit of luminous flux equal to 10⁻³ lumens.


flm

(metrology) Symbol for femtolumen, an SI unit of luminous flux equal to 10⁻¹⁵ lumens.


plm

(metrology) Symbol for picolumen, an SI unit of luminous flux equal to 10⁻¹² lumens.


klm

(metrology) Symbol for kilolumen, an SI unit of luminous flux equal to 10³ lumens.


dalm

(metrology) Symbol for decalumen, an SI unit of luminous flux equal to 10¹ lumens.


hlm

(metrology) Symbol for hectolumen, an SI unit of luminous flux equal to 10² lumens.


lm

(metrology) Symbol for the lumen, the SI unit of luminous flux.


YH

(metrology) Symbol for yottahenry, an SI unit of electrical inductance equal to 10²⁴ henrys.


nH

(metrology) Symbol for nanohenry, an SI unit of electrical inductance equal to 10⁻⁹ henrys.


fH

(metrology) Symbol for femtohenry, an SI unit of electrical inductance equal to 10⁻¹⁵ henrys.


kH

(metrology) Symbol for kilohenry, an SI unit of electrical inductance equal to 10³ henrys.


hH

(metrology) Symbol for hectohenry, an SI unit of electrical inductance equal to 10² henrys.


yH

(metrology) Symbol for yoctohenry, an SI unit of electrical inductance equal to 10⁻²⁴ henrys.


daH

(metrology) Symbol for decahenry, an SI unit of electrical inductance equal to 10¹ henrys.


dH

(metrology) Symbol for decihenry, an SI unit of electrical inductance equal to 10⁻¹ henrys.


mH

(metrology) Symbol for millihenry, an SI unit of electrical inductance equal to 10⁻³ henrys.


fT

magnetic flux density
magnetic flux density

(metrology) Symbol for femtotesla, an SI unit of magnetic flux density equal to 10⁻¹⁵ teslas.


aH

(metrology) Symbol for attohenry, an SI unit of electrical inductance equal to 10⁻¹⁸ henrys.


pT

(metrology) Symbol for picotesla, an SI unit of magnetic flux density equal to 10⁻¹² teslas.


zT

(metrology) Symbol for zeptotesla, an SI unit of magnetic flux density equal to 10⁻²¹ teslas.


cT

(metrology) Symbol for centitesla, an SI unit of magnetic flux density equal to 10⁻² teslas.


μT

(metrology) Symbol for microtesla, an SI unit of magnetic flux density equal to 10⁻⁶ teslas.


daT

(metrology) Symbol for decatesla, an SI unit of magnetic flux density equal to 10¹ teslas.


mT

(metrology) Symbol for millitesla, an SI unit of magnetic flux density equal to 10⁻³ teslas.


μH

(metrology) Symbol for microhenry, an SI unit of electrical inductance equal to 10⁻⁶ henrys.


hT

(metrology) Symbol for hectotesla, an SI unit of magnetic flux density equal to 10² teslas.


kT

(metrology) Symbol for kilotesla, an SI unit of magnetic flux density equal to 10³ teslas.


nT

(metrology) Symbol for nanotesla, an SI unit of magnetic flux density equal to 10⁻⁹ teslas.


hWb

(metrology) Symbol for hectoweber, an SI unit of magnetic flux equal to 10² webers.


EWb

(metrology) Symbol for exaweber, an SI unit of magnetic flux equal to 10¹⁸ webers.


MWb

(metrology) Symbol for megaweber, an SI unit of magnetic flux equal to 10⁶ webers.


dT

(metrology) Symbol for decitesla, an SI unit of magnetic flux density equal to 10⁻¹ teslas.


GWb

(metrology) Symbol for gigaweber, an SI unit of magnetic flux equal to 10⁹ webers.


kWb

(metrology) Symbol for kiloweber, an SI unit of magnetic flux equal to 10³ webers.


YWb

(metrology) Symbol for yottaweber, an SI unit of magnetic flux equal to 10²⁴ webers.


nWb

(metrology) Symbol for nanoweber, an SI unit of magnetic flux equal to 10⁻⁹ webers.


fWb

(metrology) Symbol for femtoweber, an SI unit of magnetic flux equal to 10⁻¹⁵ webers.


pWb

(metrology) Symbol for picoweber, an SI unit of magnetic flux equal to 10⁻¹² webers.


TWb

(metrology) Symbol for teraweber, an SI unit of magnetic flux equal to 10¹² webers.


mWb

(metrology) Symbol for milliweber, an SI unit of magnetic flux equal to 10⁻³ webers.


dWb

(metrology) Symbol for deciweber, an SI unit of magnetic flux equal to 10⁻¹ webers.


ZWb

(metrology) Symbol for zettaweber, an SI unit of magnetic flux equal to 10²¹ webers.


μWb

(metrology) Symbol for microweber, an SI unit of magnetic flux equal to 10⁻⁶ webers.


daWb

(metrology) Symbol for decaweber, an SI unit of magnetic flux equal to 10¹ webers.


yWb

(metrology) Symbol for yoctoweber, an SI unit of magnetic flux equal to 10⁻²⁴ webers.


zWb

(metrology) Symbol for zeptoweber, an SI unit of magnetic flux equal to 10⁻²¹ webers.


cWb

(metrology) Symbol for centiweber, an SI unit of magnetic flux equal to 10⁻² webers.


ZT

(metrology) Symbol for zettatesla, an SI unit of magnetic flux density equal to 10²¹ teslas.


PWb

(metrology) Symbol for petaweber, an SI unit of magnetic flux equal to 10¹⁵ webers.


aWb

(metrology) Symbol for attoweber, an SI unit of magnetic flux equal to 10⁻¹⁸ webers.


EH

(metrology) Symbol for exahenry, an SI unit of electrical inductance equal to 10¹⁸ henrys.


EH

(international standards) ISO 3166-1 alpha-2 country code for Western Sahara since 1976.

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for Spanish Sahara from 1974 to 1976.


hF

(metrology) Symbol for hectofarad, an SI unit of electrical capacitance equal to 10² farads.


fF

(metrology) Symbol for femtofarad, an SI unit of electrical capacitance equal to 10⁻¹⁵ farads.


dF

(metrology) Symbol for decifarad, an SI unit of electrical capacitance equal to 10⁻¹ farads.


pF

(metrology) Symbol for picofarad, an SI unit of electrical capacitance equal to 10⁻¹² farads.


nF

(metrology) Symbol for nanofarad, an SI unit of electrical capacitance equal to 10⁻⁹ farads.


daF

(metrology) Symbol for decafarad, an SI unit of electrical capacitance equal to 10¹ farads.


kF

(metrology) Symbol for kilofarad, an SI unit of electrical capacitance equal to 10³ farads.


μF

(metrology) Symbol for microfarad, an SI unit of electrical capacitance equal to 10⁻⁶ farads.


yF

(metrology) Symbol for yoctofarad, an SI unit of electrical capacitance equal to 10⁻²⁴ farads.


zF

(metrology) Symbol for zeptofarad, an SI unit of electrical capacitance equal to 10⁻²¹ farads.


daA

(metrology) Symbol for decaampere, an SI unit of electrical current equal to 10¹ amperes.


cF

(metrology) Symbol for centifarad, an SI unit of electrical capacitance equal to 10⁻² farads.


YF

(metrology) Symbol for yottafarad, an SI unit of electrical capacitance equal to 10²⁴ farads.


aF

(metrology) Symbol for attofarad, an SI unit of electrical capacitance equal to 10⁻¹⁸ farads.


EF

World Intellectual Property Organization

(metrology) Symbol for exafarad, an SI unit of electrical capacitance equal to 10¹⁸ farads.

exafarad

(climatology) Köppen climate classification for an ice cap climate.

w:ISO 3166-1 alpha-2#Indeterminate reservations

w:Unitary patent#1970s and 1980s: proposed Community Patent Convention

(international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for the Union of Countries under the European Community Patent Convention.


TF

(metrology) Symbol for terafarad, an SI unit of electrical capacitance equal to 10¹² farads.


TF

Adélie Land
French Southern and Antarctic Lands

French Southern Territories
French Southern Territories#English

(international standards) ISO 3166-1 alpha-2 country code for the French Southern Territories since 1979.


PF

(metrology) Symbol for petafarad, an SI unit of electrical capacitance equal to 10¹⁵ farads.


PF

French Polynesia
French Polynesia#English

(international standards) ISO 3166-1 alpha-2 country code for French Polynesia.


kV

(metrology) Symbol for kilovolt, an SI unit of electromotive force equal to 10³ volts.


hV

(metrology) Symbol for hectovolt, an SI unit of electromotive force equal to 10² volts.


pV

(metrology) Symbol for picovolt, an SI unit of electromotive force equal to 10⁻¹² volts.


fV

(metrology) Symbol for femtovolt, an SI unit of electromotive force equal to 10⁻¹⁵ volts.


dV

(metrology) Symbol for decivolt, an SI unit of electromotive force equal to 10⁻¹ volts.


ZV

(metrology) Symbol for zettavolt, an SI unit of electromotive force equal to 10²¹ volts.


cV

(metrology) Symbol for centivolt, an SI unit of electromotive force equal to 10⁻² volts.


daV

(metrology) Symbol for decavolt, an SI unit of electromotive force equal to 10¹ volts.


zV

(metrology) Symbol for zeptovolt, an SI unit of electromotive force equal to 10⁻²¹ volts.


aV

(metrology) Symbol for attovolt, an SI unit of electromotive force equal to 10⁻¹⁸ volts.


YV

(metrology) Symbol for yottavolt, an SI unit of electromotive force equal to 10²⁴ volts.


YV

(international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for Venezuela.


yV

(metrology) Symbol for yoctovolt, an SI unit of electromotive force equal to 10⁻²⁴ volts.


EV

(metrology) Symbol for exavolt, an SI unit of electromotive force equal to 10¹⁸ volts.


EV

Eurasian Patent Organization
w:Eurasian Patent Organization

(international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for the Eurasian Patent Organization.


gaa

(international standards) ISO 639-2 & ISO 639-3 language code for Ga.


ZC

(metrology) Symbol for zettacoulomb, an SI unit of electric charge equal to 10²¹ coulombs.


pC

(metrology) Symbol for picocoulomb, an SI unit of electric charge equal to 10⁻¹² coulombs.


nC

(metrology) Symbol for nanocoulomb, an SI unit of electric charge equal to 10⁻⁹ coulombs.


fC

(metrology) Symbol for femtocoulomb, an SI unit of electric charge equal to 10⁻¹⁵ coulombs.


zC

(metrology) Symbol for zeptocoulomb, an SI unit of electric charge equal to 10⁻²¹ coulombs.


daC

(metrology) Symbol for decacoulomb, an SI unit of electric charge equal to 10¹ coulombs.


hC

(metrology) Symbol for hectocoulomb, an SI unit of electric charge equal to 10² coulombs.


mC

(metrology) Symbol for millicoulomb, an SI unit of electric charge equal to 10⁻³ coulombs.


cC

(metrology) Symbol for centicoulomb, an SI unit of electric charge equal to 10⁻² coulombs.


kC

(metrology) Symbol for kilocoulomb, an SI unit of electric charge equal to 10³ coulombs.


μC

(metrology) Symbol for microcoulomb, an SI unit of electric charge equal to 10⁻⁶ coulombs.


dC

(metrology) Symbol for decicoulomb, an SI unit of electric charge equal to 10⁻¹ coulombs.


EPa

(metrology) Symbol for exapascal, an SI unit of pressure and stress equal to 10¹⁸ pascals.


hPa

(metrology) Symbol for hectopascal, an SI unit of pressure and stress equal to 10² pascals.


PPa

(metrology) Symbol for petapascal, an SI unit of pressure and stress equal to 10¹⁵ pascals.


mPa

(metrology) Symbol for millipascal, an SI unit of pressure and stress equal to 10⁻³ pascals.


fPa

(metrology) Symbol for femtopascal, an SI unit of pressure and stress equal to 10⁻¹⁵ pascals.


pPa

(metrology) Symbol for picopascal, an SI unit of pressure and stress equal to 10⁻¹² pascals.


ZPa

(metrology) Symbol for zettapascal, an SI unit of pressure and stress equal to 10²¹ pascals.


TPa

(metrology) Symbol for terapascal, an SI unit of pressure and stress equal to 10¹² pascals.


nPa

(metrology) Symbol for nanopascal, an SI unit of pressure and stress equal to 10⁻⁹ pascals.


daPa

(metrology) Symbol for decapascal, an SI unit of pressure and stress equal to 10¹ pascals.


μPa

(metrology) Symbol for micropascal, an SI unit of pressure and stress equal to 10⁻⁶ pascals.


aPa

(metrology) Symbol for attopascal, an SI unit of pressure and stress equal to 10⁻¹⁸ pascals.


cPa

(metrology) Symbol for centipascal, an SI unit of pressure and stress equal to 10⁻² pascals.


yPa

(metrology) Symbol for yoctopascal, an SI unit of pressure and stress equal to 10⁻²⁴ pascals.


zPa

(metrology) Symbol for zeptopascal, an SI unit of pressure and stress equal to 10⁻²¹ pascals.


YPa

(metrology) Symbol for yottapascal, an SI unit of pressure and stress equal to 10²⁴ pascals.


MPa

(metrology) Symbol for megapascal, an SI unit of pressure and stress equal to 10⁶ pascals.


dPa

(metrology) Symbol for decipascal, an SI unit of pressure and stress equal to 10⁻¹ pascals.


(white supremacy) The 'fourteen words': we must secure the existence of our people and a future for white children.


hW

(metrology) Symbol for hectowatt, an SI unit of power equal to 10² watts.


nW

(metrology) Symbol for nanowatt, an SI unit of power equal to 10⁻⁹ watts.


fW

(metrology) Symbol for femtowatt, an SI unit of power equal to 10⁻¹⁵ watts.


pW

(metrology) Symbol for picowatt, an SI unit of power equal to 10⁻¹² watts.


aW

(metrology) Symbol for attowatt, an SI unit of power equal to 10⁻¹⁸ watts.


daW

(metrology) Symbol for decawatt, an SI unit of power equal to 10¹ watts.


cW

(metrology) Symbol for centiwatt, an SI unit of power equal to 10⁻² watts.


dW

(metrology) Symbol for deciwatt, an SI unit of power equal to 10⁻¹ watts.


yW

(metrology) Symbol for yoctowatt, an SI unit of power equal to 10⁻²⁴ watts.


zW

(metrology) Symbol for zeptowatt, an SI unit of power equal to 10⁻²¹ watts.


YW

(metrology) Symbol for yottawatt, an SI unit of power equal to 10²⁴ watts.


ZW

(metrology) Symbol for zettawatt, an SI unit of power equal to 10²¹ watts.


ZW

(international standards) ISO 3166-1 alpha-2 country code for Zimbabwe since 1980.


EW

(metrology) Symbol for exawatt, an SI unit of power equal to 10¹⁸ watts.


EW

(international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for Estonia.

extinct in the wild
w:Extinct in the wild

(IUCN Red List) Abbreviation of extinct in the wild.


CW

(international standards) ISO 3166-1 alpha-2 country code for Curaçao since 2010.


TW

(metrology) Symbol for terawatt, an SI unit of power equal to 10¹² watts.


TW

(international standards) ISO 3166-1 alpha-2 country code for Taiwan.


COL

(international standards) ISO 3166-1 alpha-3 country code for Colombia.


rel

(international standards) ISO 639-3 language code for Rendille.


cae

(international standards) ISO 639-3 language code for Laalaa.


pJ

(metrology) Symbol for picojoule, an SI unit of work or energy equal to 10⁻¹² joules.


fJ

(metrology) Symbol for femtojoule, an SI unit of work or energy equal to 10⁻¹⁵ joules.


yJ

(metrology) Symbol for yoctojoule, an SI unit of work or energy equal to 10⁻²⁴ joules.


nJ

(metrology) Symbol for nanojoule, an SI unit of work or energy equal to 10⁻⁹ joules.


mJ

(metrology) Symbol for millijoule, an SI unit of work or energy equal to 10⁻³ joules.


zJ

(metrology) Symbol for zeptojoule, an SI unit of work or energy equal to 10⁻²¹ joules.


daJ

(metrology) Symbol for decajoule, an SI unit of work or energy equal to 10¹ joules.


aJ

(metrology) Symbol for attojoule, an SI unit of work or energy equal to 10⁻¹⁸ joules.


cJ

(metrology) Symbol for centijoule, an SI unit of work or energy equal to 10⁻² joules.


dJ

(metrology) Symbol for decijoule, an SI unit of work or energy equal to 10⁻¹ joules.


kJ

(metrology) Symbol for kilojoule, an SI unit of work or energy equal to 10³ joules.


μJ

(metrology) Symbol for microjoule, an SI unit of work or energy equal to 10⁻⁶ joules.


hJ

(metrology) Symbol for hectojoule, an SI unit of work or energy equal to 10² joules.


YJ

(metrology) Symbol for yottajoule, an SI unit of work or energy equal to 10²⁴ joules.


ZJ

(metrology) Symbol for zettajoule, an SI unit of work or energy equal to 10²¹ joules.


EJ

(metrology) Symbol for exajoule, an SI unit of work or energy equal to 10¹⁸ joules.


GJ

(metrology) Symbol for gigajoule, an SI unit of work or energy equal to 10⁹ joules.


MJ

(metrology) Symbol for megajoule, an SI unit of work or energy equal to 10⁶ joules.


MJ

(astronomy) Jovian mass: a unit of measurement, equal to the mass of Jupiter.


fcd

(metrology) Symbol for femtocandela, an SI unit of luminous intensity equal to 10⁻¹⁵ candelas.


hcd

(metrology) Symbol for hectocandela, an SI unit of luminous intensity equal to 10² candelas.


kcd

(metrology) Symbol for kilocandela, an SI unit of luminous intensity equal to 10³ candelas.


ncd

(metrology) Symbol for nanocandela, an SI unit of luminous intensity equal to 10⁻⁹ candelas.


ccd

(metrology) Symbol for centicandela, an SI unit of luminous intensity equal to 10⁻² candelas.


Gcd

(metrology) Symbol for gigacandela, an SI unit of luminous intensity equal to 10⁹ candelas.


Tcd

(metrology) Symbol for teracandela, an SI unit of luminous intensity equal to 10¹² candelas.


Mcd

(metrology) Symbol for megacandela, an SI unit of luminous intensity equal to 10⁶ candelas.


dcd

(metrology) Symbol for decicandela, an SI unit of luminous intensity equal to 10⁻¹ candelas.


Pcd

(metrology) Symbol for petacandela, an SI unit of luminous intensity equal to 10¹⁵ candelas.


zcd

(metrology) Symbol for zeptocandela, an SI unit of luminous intensity equal to 10⁻²¹ candelas.


Zcd

(metrology) Symbol for zettacandela, an SI unit of luminous intensity equal to 10²¹ candelas.


Ecd

(metrology) Symbol for exacandela, an SI unit of luminous intensity equal to 10¹⁸ candelas.


acd

(metrology) Symbol for attocandela, an SI unit of luminous intensity equal to 10⁻¹⁸ candelas.

attocandela

(international standards) ISO 639-3 language code for Kyode.


dacd

(metrology) Symbol for decacandela, an SI unit of luminous intensity equal to 10¹ candelas.


pcd

(international standards) ISO 639-3 language code for Picard.

(metrology) Symbol for picocandela, an SI unit of luminous intensity equal to 10⁻¹² candelas.


μcd

(metrology) Symbol for microcandela, an SI unit of luminous intensity equal to 10⁻⁶ candelas.


mcd

(metrology) Symbol for millicandela, an SI unit of luminous intensity equal to 10⁻³ candelas.


PJ

(metrology) Symbol for petajoule, an SI unit of work or energy equal to 10¹⁵ joules.


hN

(metrology) Symbol for hectonewton, an SI unit of force equal to 10² newtons.


kK

thermodynamic temperature
thermodynamic temperature

(metrology) Symbol for kilokelvin, an SI unit of thermodynamic temperature equal to 10³ kelvins.


fN

(metrology) Symbol for femtonewton, an SI unit of force equal to 10⁻¹⁵ newtons.


nN

(metrology) Symbol for nanonewton, an SI unit of force equal to 10⁻⁹ newtons.


pN

(metrology) Symbol for piconewton, an SI unit of force equal to 10⁻¹² newtons.


daN

(metrology) Symbol for decanewton, an SI unit of force equal to 10¹ newtons.


fK

(metrology) Symbol for femtokelvin, an SI unit of thermodynamic temperature equal to 10⁻¹⁵ kelvins.


mK

(metrology) Symbol for millikelvin, an SI unit of thermodynamic temperature equal to 10⁻³ kelvins.


yN

(metrology) Symbol for yoctonewton, an SI unit of force equal to 10⁻²⁴ newtons.


hK

(metrology) Symbol for hectokelvin, an SI unit of thermodynamic temperature equal to 10² kelvins.


μN

(metrology) Symbol for micronewton, an SI unit of force equal to 10⁻⁶ newtons.


zN

(metrology) Symbol for zeptonewton, an SI unit of force equal to 10⁻²¹ newtons.


yK

(metrology) Symbol for yoctokelvin, an SI unit of thermodynamic temperature equal to 10⁻²⁴ kelvins.


zK

(metrology) Symbol for zeptokelvin, an SI unit of thermodynamic temperature equal to 10⁻²¹ kelvins.


abk

(international standards) ISO 639-2 & ISO 639-3 language code for Abkhaz.


daK

(metrology) Symbol for decakelvin, an SI unit of thermodynamic temperature equal to 10¹ kelvins.


μK

(metrology) Symbol for microkelvin, an SI unit of thermodynamic temperature equal to 10⁻⁶ kelvins.


cN

(metrology) Symbol for centinewton, an SI unit of force equal to 10⁻² newtons.


aK

(metrology) Symbol for attokelvin, an SI unit of thermodynamic temperature equal to 10⁻¹⁸ kelvins.


YN

(metrology) Symbol for yottanewton, an SI unit of force equal to 10²⁴ newtons.


dK

(metrology) Symbol for decikelvin, an SI unit of thermodynamic temperature equal to 10⁻¹ kelvins.


dN

(metrology) Symbol for decinewton, an SI unit of force equal to 10⁻¹ newtons.


cK

(metrology) Symbol for centikelvin, an SI unit of thermodynamic temperature equal to 10⁻² kelvins.


ZK

(metrology) Symbol for zettakelvin, an SI unit of thermodynamic temperature equal to 10²¹ kelvins.


ZN

(metrology) Symbol for zettanewton, an SI unit of force equal to 10²¹ newtons.


asm

(international standards) ISO 639-2 & ISO 639-3 language code for Assamese.


EK

(metrology) Symbol for exakelvin, an SI unit of thermodynamic temperature equal to 10¹⁸ kelvins.


aym

(international standards) ISO 639-2 & ISO 639-3 language code for Aymara.


aze

(international standards) ISO 639-2 & ISO 639-3 language code for Azerbaijani.


TK

(metrology) Symbol for terakelvin, an SI unit of thermodynamic temperature equal to 10¹² kelvins.


TK

(international standards) ISO 3166-1 alpha-2 country code for Tokelau.


amh

(international standards) ISO 639-2 & ISO 639-3 language code for Amharic.


𐤖

A symbol in Phoenician alphabet for cardinal number one.


𐤙

A symbol in Phoenician alphabet for cardinal number one hundred.


A symbol in Phoenician alphabet used as a word separator


𐤘

A symbol in Phoenician alphabet for cardinal number twenty.


𐤗

A symbol in Phoenician alphabet for cardinal number ten.


GRC

(international standards) ISO 3166-1 alpha-3 country code for Greece.


GRC

(international standards) Unofficial non-ISO 4217 currency code for the cryptocurrency Gridcoin.


Arg

(mathematics) The principal value of the argument function.


CAN

(international standards) ISO 3166-1 alpha-3 country code for Canada.


CAN

(international standards, aviation) IATA airport code for Guangzhou Baiyun International Airport, which serves Guangzhou, Guangdong, China.


SH

Saint Helena, Ascension and Tristan da Cunha#English

(international standards) ISO 3166-1 alpha-2 country code for Saint Helena, Ascension and Tristan da Cunha.


JST

(international standards, aviation) IATA airport code for Johnstown–Cambria County Airport, which serves Johnstown, Pennsylvania, United States.


gay

(international standards) ISO 639-2 & ISO 639-3 language code for Gayo.


syr

(international standards) ISO 639-2 & ISO 639-3 language code for Syriac.


FIM

(international standards, historical) ISO 4217 currency code for the former new Finnish markka; a currency used from 1963 to 2002.


XD

My friend tripped over a rock and hit his head XD

An emoticon representing a face expressing hysterical laughter.


mdf

(international standards) ISO 639-2 & ISO 639-3 language code for Moksha.


anh

(international standards) ISO 639-3 language code for Nend.


jii

(international standards) ISO 639-3 language code for Jiiddu.


fap

(international standards) ISO 639-3 language code for Palor.


kaa

(international standards) ISO 639-2 & ISO 639-3 language code for Karakalpak.


ↈ

(archaic, Roman numerals) Hundred thousand (100,000).

(archaic) the hundred thousandth (100,000th)


ↇ

(archaic, Roman numerals) fifty thousand (50000).

(archaic) the fifty thousandth (50000th)


ↁ

(archaic, Roman numerals) Five thousand (5000).


ↂ

(archaic, Roman numerals) Ten thousand (10000).


MTP

(international standards, obsolete) Former ISO 4217 currency code for the former Maltese pound; a currency used from 1972 to 1983.


CX

Christmas Island
Christmas Island#English

(international standards) ISO 3166-1 alpha-2 country code for Christmas Island.


CX

The IATA airline code for Cathay Pacific.


fat

(international standards) ISO 639-2 & ISO 639-3 language code for Fante.


(music) Symbol for G seventh or dominant seventh.


A molecule of heavy water, comprising two deuterium atoms and an oxygen atom.


Opie, Iona, Opie, Pete (1959) chapter 9, in The Lore and Language of Schoolchildren, New York Review Books, published 2001, →ISBN, page 174: “Poor Old Stinker's dead and gone, / His face you'll see no more: / For what he thought was H₂O / Was H₂SO₄!”

(inorganic chemistry) the chemical formula of sulfuric acid


HOH

(chemistry) the molecular formula of hydrogen hydroxide

(chemistry) the molecular formula for hydrohydroxic acid


(organic chemistry) molecular formula for ethanoic acid, as acetic acid


DHO

(inorganic chemistry) A molecule of semi-heavy water, comprising one deuterium and one protium type of hydrogen atoms with an oxygen atom


C₂H₆

(organic chemistry) molecular formula for ethane


(inorganic chemistry) chemical formula for silicon dioxide


C₂H₄

(organic chemistry) molecular formula for ethene


C₂H₂

(organic chemistry) molecular formula for ethyne


(inorganic chemistry) The molecular formula for sulfurous acid.


(inorganic chemistry) the molecular formula for phosphorous acid.


ACV

(international standards, aviation) IATA airport code for Arcata–Eureka Airport, which serves Humboldt County, California, United States.


molecular formula
molecular formula#English

(inorganic chemistry) The molecular formula of monosilane.


(inorganic chemistry) molecular formula for disilane

trisilyl

SiH₂SiH₂SiH₃, -SiH₂SiH₂SiH₃, SiH(SiH₃)₂, -SiH(SiH₃)₂, Si₃H₇, -Si₃H₇


D₂

Deuterium-deuterium, a type of hydrogen (H₂) molecule. In other words, dideuterium, or diatomic deuterium.


RWA

(international standards) ISO 3166-1 alpha-3 country code for Rwanda.


awi

(international standards) ISO 639-3 language code for Aekyom.


PRK

(international standards) ISO 3166-1 alpha-3 country code for North Korea.


lub

(international standards) ISO 639-2 & ISO 639-3 language code for Luba-Katanga.


boe

(international standards) ISO 639-3 language code for Mundabli.


(European Union) estimated mark. A mark required to be appended to the nominal mass or volume printed on prepackaged goods for sale within the European Union, certifying that the actual contents of the package comply with specified criteria for estimation.


ind

* (winding number): Ultimately from Latin index.

mathematical analysis
mathematical analysis

(geometry, topology, mathematical analysis) winding number

(international standards) ISO 639-2 & ISO 639-3 language code for Indonesian.


grb

(international standards) ISO 639-2 & ISO 639-3 language code for Grebo.


jav

(international standards) ISO 639-2 & ISO 639-3 language code for Javanese.


adl

(international standards) ISO 639-3 language code for Galo.


FRA

(international standards) ISO 3166-1 alpha-3 country code for France.


ATB

British Antarctic Territory
British Antarctic Territory#English

(international standards, obsolete) Former ISO 3166-1 alpha-3 country code for the British Antarctic Territory from 1974 to 1979.


QSS

(radio slang, question) What working frequency will you use?

(radio slang, statement) I will use the working frequency ... kHz (or MHz).


QSR

(radio slang, question) Do you want me to repeat my call?

(radio slang, statement) Please repeat your call; I did not hear you.


QSO

(radio abbreviation, question) Can you communicate with ... direct or by relay?

(radio abbreviation, statement) I can communicate with ... direct (or by relay through ...).

(radio jargon, noun) A two-way amateur radio contact.


QSG

(radio slang, question) Shall I send ... telegrams (messages) at a time?

(radio slang, statement) Send ... telegrams (messages) at a time.


ʨ

(IPA, dated) a voiceless alveolo-palatal affricate [t͡ɕ].

(superscript ⟨𐞫⟩, IPA) a weak, fleeting or epenthetic [t͡ɕ].


LIS

(international standards, aviation) IATA airport code for Lisbon International Airport, which serves Lisbon, Portugal.


SHJ

(international standards, aviation) IATA airport code for Sharjah International Airport, which serves Sharjah, Dubai, United Arab Emirates.


Michelle: Yes, of course ☺

Michael: Are you coming round this evening?

This was supposed 2 be a SURPRISE, but the girls got it out of me. ☺ I wanted all of us 2 spend Xmas 2gether. By all, I mean r horses 2. Sooo . . . B, C, G, Z, & D, you have guests waiting @ BC. Zane, Valentino, Scout, Nero, & Polo r there! Now we can ride r horses when we r not volunteering & spend Xmas w them. ☺

2013, Jessica Burkhart, Home for Christmas (Canterwood Crest; Super Special) (in English), New York, NY: Aladdin M!X, →ISBN, page 44:

A smiling face; used to indicate happiness or amusement.


(international standards) ISO 216 standard paper size of 250 mm × 353 mm (9.84 in × 13.9 in), with a surface area of 882 cm² (137 sq in).


COOH

Acetic acid is CH₃COOH

(organic chemistry) A common ending for carboxylic acids


(mathematics) Any of the Weierstrass elliptic functions.


Coordinate term: ©


ctn

(mathematics, obsolete) The cotangent function.


jit

(international standards) ISO 639-3 language code for Jita.


nn

(international standards) ISO 639-1 language code for Norwegian Nynorsk.


fao

(international standards) ISO 639-2 & ISO 639-3 language code for Faroese.


ↆ

(botany, V-shaped form) non-woody (herbaceous) perennial


ħ

IPA

Originally devised for use in Maltese; see that entry for more details. First adopted as the IPA symbol for the voiceless pharyngeal fricative in 1921.

(superscript ⟨𐞕⟩, IPA) [ħ]-fricated release of a plosive (e.g. [ʡ𐞕], sometimes implying an affricate [ʡ͜ħ]); [ħ]-coloring; or a weak, fleeting or epenthetic [ħ].

(physics) a typesetting error for the reduced Planck's constant, ⟨ℏ⟩.

Ⱥⱥ Ƀƀ Ȼȼ Đđ Ɇɇ Ǥǥ Ħħ Ɨɨ Ɉɉ Ꝁꝁ Łł Øø Ᵽᵽ Ɍɍ Ŧŧ Ʉʉ Ɏɏ Ƶƶ Ꝥꝥ


PLZ

(international standards, historical) ISO 4217 currency code for the former third Polish złoty; a currency used from 1950 to 1994.


GG

The symbol for the gigagauss, a unit of magnetic field strength in the cgs system of units.

(international standards) ISO 3166-1 alpha-2 country code for Guernsey since 2006.


FAO

(international standards, aviation) IATA airport code for Faro Airport, which serves Faro, Algarve, Portugal.


ack

(international standards) ISO 639-3 language code for Aka-Kora.


gil

(international standards) ISO 639-2 & ISO 639-3 language code for Gilbertese.


(international standards) ISO 269 standard paper size of 458 mm × 648 mm (18.03 in × 25.51 in), with a surface area of 0.297 m² (3.19 sq ft).


(international standards) ISO 269 standard paper size of 648 mm × 917 mm (25.51 in × 36.1 in), with a surface area of 0.594 m² (6.4 sq ft).


mui

(international standards) ISO 639-3 language code for Musi.


coa

(international standards) ISO 639-3 language code for Cocos Islands Malay.


lle

(international standards) ISO 639-3 language code for Lele (Papua New Guinea).


XP

An emoticon representing a silly, laughing mood.


kle

(international standards) ISO 639-3 language code for Kulung.


myn

(international standards) ISO 639-2 & ISO 639-5 language code for Mayan languages.


rif

(international standards) ISO 639-3 language code for Tarifit.


atan

trigonometric function
trigonometric function

(trigonometry) The symbol of the trigonometric function arctangent.


mga

(international standards) ISO 639-2 & ISO 639-3 language code for Middle Irish.


adi

(international standards) ISO 639-3 language code for Adi.


(mathematics) The symbol used in predicate calculus meaning "there does not exist".


Alternative form: <<

Alternative form: <<

The n-Vector p ≪ q if pᵢ < qᵢ for all i in [1,n].

(mathematics) Less than for every element (of a set).

(programming) Alternative form of << (left shift operator).


Introduced by the B programming language, which also used "!" for boolean negation, and inherited by its successor C. Later adopted more widely.

programming language
programming language#English

(programming) In some programming languages, an operator that compares two values for inequality, yielding a true result if they differ.


Alternative form: >>

Alternative form: >>

The n-Vector p ≫ q if pᵢ > qᵢ for all i in [1,n].

(mathematics) Greater than for every element (of a set).

(programming) Alternative form of >> (right shift operator).


(typography) Introduces items in a list.

(category theory) The unique object in a category with a single object.

(chemistry) Indicates that the chemical species is a free radical.


A ∌ b

(mathematics) Does not contain as member.


A ∋ b


Reversed (or backwards) version of the lowercase lunate epsilon ϵ. Introduced by Giuseppe Peano in 1889 in "Principles of arithmetic, presented by a new method" http://jeff560.tripod.com/set.html.

(Teuthonista) A barred-ɔ for a central vowel (IPA [ɵ̞]).


The symbol for radioactivity, used as a warning sign.


The biohazard symbol, used as a warning sign.


Used by the Ancient Greeks for the god Hermes

caduceus (a symbol associated with peace, commerce, diplomacy, and occasionally death, as well as with travellers and messengers)

a simplified staff of Hermes used since antiquity as a symbol for the planet Mercury

the caduceus in Newton's alchemical writings

a stylized caduceus used as a modern symbol for the asteroid Hygiea


First used as a communist symbol by Yevgeny Kamzolkin in 1917.

The hammer and sickle, a symbol of communism.


A star and crescent, and ancient symbol originally representing either the Sun and Moon or the Moon and Venus.


[A chariot pulled by a burning skeleton horse parks in a handicap spot, marked with the symbol: ♿] Oskar: Hey, that's a handicap spot.

2015, “Blood Moon Ball”, in Star vs. the Forces of Evil, season 1, episode 8a (in English):

The International Symbol of Access, used to indicate at places suitable for disabled people.


geo

(international standards) ISO 639-2/B language code for Georgian.


From a combination of the ⟨♀⟩ female, ⟨♂⟩ male, and ⟨⚨⟩ androgyne symbols.

(specifically, the variant without a divider)

(gender) all genders; gender-inclusive (as in a unisex public toilet).

(LGBTQ) transgender; transsexual; genderqueer.


(botany) non-sexual (vegetative) reproduction.

(zoology) non-reproducing (e.g. worker bees).

(astronomy, before 16th century) The Classical and Medieval form of ⟨♀⟩, the symbol of the planet Venus.


(botany) Perfect (flower), hermaphrodite.

In the 1970s, gay liberation movements used the male and female symbols superimposed (⚤) to represent the common goals of lesbians and gay men. These days, the superimposed symbols might also denote a heterosexual awareness of the differences and diversity between men and women. A transgendered person might superimpose the male and female symbols in such a way that the arrow and cross join on the same single ring (⚥).

2003, Ken Cage, Moyra Evans, Gayle: The Language of Kinks and Queens : a History and Dictionary of Gay Language in South Africa (in English), Jacana Media, →ISBN, page 48:

[Xenovia has a few condoms with the symbol ⚥ interlocked with the symbol ♡ (a heart).]

2013, "Open House Begins!", episode 8 of High School DxD New

Sexual intercourse
sexual intercourse#English


mmHg

millimeter of mercury
millimeter of mercury#Translingual

Abbreviation of millimeter of mercury. A unit of pressure equal to the amount of fluid pressure one millimeter deep in mercury at zero degrees Celsius on Earth.


BOlvs in Engliſh is called a morſell. It is a medicine laxatiue, in forme & faſhion it is meanely whole, & it is ſwallowed by litle gobbets. […] ℞. medulla caſiæ fiſtulæ newly drawen. ℥. j. or ʒ. x. the graines (that is the kernelles) of barbaries. ℈. ß. and with ſugar roſet [sugar compounded with rose petals] make a bole.

1583, Philip Barrough [i.e., Philip Barrow], “Of Making Bolus”, in The Methode of Phisicke, Conteyning the Causes, Signes, and Cures of Inward Diseases in Mans Body from the Head to the Foote. […] (in English), London: […] Thomas Vautroullier […], →OCLC, book VI, page 288:

Take Sugrede Coriandre ſeedes 3 qv. of an ovvnce, deſcidede liqveriſh ℥ [?]. Calmus, redd Roſes, ana a q. of an ounce, Cĩnamone 3 qv. of an ounce, Ginger, cloves, Mace, Nuttmegges, ana a q. of an oũce, all vvhich being contunded together, & as much Suger mixede thervvith, as ther is of the other poulder, or accordinge as vve deſire the dulcor therof, vve muſt in the morning faſting, or one hovver before ſuppervſe heerof.

1599, Oswaldus Gabelhouer, translated by Charles Battus and A. M., The Boock of Physicke: […] (in English), Dort: […] Isaack Caen, page 116, column 2:

(pharmacy) Apothecary symbol for ounce (unit of weight).


byn

(international standards) ISO 639-2 & ISO 639-3 language code for Blin.


(mathematics) neither greater than nor equal to


(mathematics) neither less than nor equal to


ربع الحزب
ربع الحزب#Arabic

The rub el hizb (Arabic ربع الحزب) symbol, used to divide the hizbs (chapters) of the Qur'an.


PbO

(inorganic chemistry) chemical formula for lead monoxide


HgS

(inorganic chemistry) chemical formula for mercuric sulfide


SiO

(inorganic chemistry) chemical formula for silicon monoxide


From ∧ (“AND”) and the overline meaning "NOT".

(p ⊼ q)


From ∨ (“OR”) and the overline meaning "NOT".

(p ⊽ q)


From ∨ (“OR”) and the underline meaning "Exclusive".

(p ⊻ q)


(mathematics, category theory) n-ary coproduct


(mathematics) double integral (an integral over two variables).


(mathematics) triple integral (an integral over three variables).


(mathematics) the n-ary conjunction or meet operator

universal quantifier
universal quantifier


ϵ

Lower case "lunate" epsilon, the fifth letter of the ancient Greek alphabet


From the Ancient Greek capital letter Δ.

∆x the change in variable x

(mathematics) An increment or change in a variable.

symmetric difference
symmetric difference

(set theory) The symmetric difference symbol.

(mathematics, physics) The Laplace operator.


(logic, algebra) the n-ary disjunction or join operator

existential quantifier
existential quantifier


p = −iħ∇

∇f(x, y, z)

differential operator
differential operator

(mathematics) the gradient differential operator


(typography) The Arabic star, used like an asterisk


Based on the letters JIS. Used up to October 2008, when the symbol was given a new design.

Japanese Industrial Standards
w:Japanese Industrial Standards

(obsolete) Used to indicate compliance with Japanese Industrial Standards.


وَوَضۡعُ هٰذِهِ الۡعَلَامَةِ «۩» بَعۡدَ كَلِمَةٍ یَدُلُّ عَلَىٰ مَوۡضِعِ السَّجۡدَةِ نَحۡوُ: وَلِلَّهِ یَسۡجُدُ مَا فِی ٱلسَّمَـٰوَ ٰتِ وَمَا فِی ٱلۡأَرۡضِ مِن دَاۤبَّةࣲ وَٱلۡمَلَـٰۤىِٕكَةُ وَهُمۡ لَا یَسۡتَكۡبِرُونَ ۝٤٩ یَخَافُونَ رَبَّهُم مِّن فَوۡقِهِمۡ وَیَفۡعَلُونَ مَا یُؤۡمَرُونَ ۩ ۝٥٠

1424 AH / 2003–2004 CE, “رِوَايَةُ هٰذَا الۡمُصۡحَفِ وَمُصۡطَلَحَاتُ رَسۡمِهِ وَضَبۡطِهِ وَعَدُّ آيِهِ [riwāyatu hāḏā l-muṣḥafi wamuṣṭalaḥātu rasmihi waḍabṭihi waʕaddu ʔāyihi]”, in مُصۡحَفُ الۡمَدِينَةِ النَّبَوِيَّةِ [muṣḥafu l-madīnati n-nabawiyyati] (in Arabic), King Fahd Complex for the Printing of the Holy Quran, page ح:

(Islam) used in the Qur'an, indicating that the reciter should follow the example of the prophet Muhammad in prostrating himself before Allah at that point in the verse.


Used in the Cyrillic numeral system to indicate that the following number is to be multiplied by one thousand.


Cyrillic numeral system
w:Cyrillic numerals

Used in the Cyrillic numeral system to indicate that the overlaid digit is multiplied by one million.


My telephone number is 101‒555‒1234.

telephone number
telephone number#English

Used to separate digits in telephone numbers.

hyphen-minus, a catch-all character for various dash and dash-like characters


ℜ

(mathematics) The real part of a complex number.


ℑ

(mathematics) The imaginary part of an complex number


ź

(NAPA) a voiced alveopalatal fricative (IPA [ʑ]).


Indicates a portion from a total of ten thousand.


300∕60 = 5

(mathematics) Used as a division sign, the same as ⟨÷⟩ (division/minus) or ⟨:⟩ (ratio/division), depending on the country.


1⁄2 of 10 is 5

(mathematics) Used to separate the numerator from the denominator in fractions.


ℶ

(2)+ðב₀=א₀, ב_(α+1)=2, and lim ב_λ→ sup ב_α:α<λ for a limit ordinal λ.

(set theory) Symbol for the cardinality of an infinite set in a iterative hierarchy of power sets, starting with ℵ₀. Usually indexed by an ordinal number.


Curved single quotation marks and apostrophes

Straight single quotation mark and apostrophe

Used as a quotation mark in some languages.


lb, an abbreviation of libra 'pound', with an abbreviation bar through the ascenders.


ℙ

(mathematics) A symbol used to denote the probability of an event.


ℍ

The first letter of the surname of William Rowan Hamilton (1805–1865), written in blackboard bold.

(mathematics) The symbol for the set of quaternions.


ℓ

(mathematics) Sequence space on Wikipedia.Wikipedia


(chiefly pharmacy) The symbol for scruple (unit of measure equal to twenty grains or 1.2959782 g).


CVE

(international standards) ISO 4217 currency code for the Cape Verdean escudo.


CAI

(international standards, aviation) IATA airport code for Cairo International Airport, which serves Cairo, Egypt.


sna

(international standards) ISO 639-2 & ISO 639-3 language code for Shona.


∛x=x


∜x=x


vwa

(international standards) ISO 639-3 language code for Awa (China).


MgO

(inorganic chemistry) chemical formula for magnesium oxide


LTL

(international standards, historical) ISO 4217 currency code for the former second Lithuanian litas; a currency used from 1993 to 2015.


Introduced into mathematical usage by Paul Halmos, modeled after the end sign ■ (a printer’s ornament or dingbat used to indicate the end of an article or story) found in popular print media.


{ 4, 1, 5, 3 } ∖ { 3, 1, 9 } = { 4, 5 }


If a universe U is defined, then the complement of a set A is denoted by the following equivalent notations A^C, A′, ∁A, ∁_UA, or U ∖ A.


ZnO

(inorganic chemistry) The chemical formula for zinc oxide.


ADQ

(international standards, aviation) IATA airport code for Kodiak Benny Benson State Airport, which serves Kodiak, Alaska, United States.


BQ

Antarctica
BQ
British Antarctic Territory

Caribbean Netherlands
Caribbean Netherlands#English

(international standards) ISO 3166-1 alpha-2 country code for the Caribbean Netherlands since 2010.

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for the British Antarctic Territory from 1974 to 1979.


ABO

(international standards, aviation) IATA airport code for Aboisso Airport, which serves Aboisso, Ivory Coast.


pek

(international standards) ISO 639-3 language code for Penchal.


The eject button, which ejects media — such as a DVD, CD, VHS tape, etc. — from a device.


TLS

(international standards) ISO 3166-1 alpha-3 country code for Timor-Leste since 2002.


A spear, representing the goddess Pallas Athena. Invented soon after discovery in the early 19th century. The head of the spear took on various shapes, depending on typographic convenience, including a triangle △ and a spade ♤ or inverted heart ♡, but is now usually a diamond ◇ or lozenge ◊. The cross at bottom recalls ⟨☿⟩, ⟨♀⟩, ⟨⚳⟩.

(astronomy, astrology) The asteroid 2 Pallas.

alchemical symbol for sulfur, a variant form of Athena's spear that was sometimes easier to typeset


A scythe, representing the Roman harvest goddess Ceres. Invented soon after discovery in the early 19th century. The cross at bottom recalls ⟨☿⟩ and ⟨♀⟩. The symbol was once sometimes reversed to incorporate the letter 'C' as the initial for 'Ceres'.

(astronomy, astrology) The dwarf planet and asteroid 1 Ceres.


The scepter of the Roman queen of the gods, Juno, surmounted by a star. The scepter took various forms in the 19th century, some rather elaborate, but soon the original printer's hack of an asterisk ⟨*⟩ over an inverted dagger ⟨⸸⟩ was settled on for typographic convenience.

(astronomy, astrology) The asteroid 3 Juno.


f⁗

t, t′, t″, t‴, t⁗, …

A, A′, A″, A‴, A⁗, …

(geometry) used to distinguish five or more points, lines, etc. with the same name


The eternal fire in the Roman temple to the goddess Vesta. The current form, which incorporates the letter 'V', is an astrological simplification, from the 1970s, of the 1852 form below.

(astronomy, astrology) The asteroid 4 Vesta.


f‴

t, t′, t″, t‴, t⁗, …

A, A′, A″, A‴, A⁗, …

(geometry) used to distinguish four or more points, lines, etc. with the same name


luh

(international standards) ISO 639-3 language code for Leizhou Min.


BND

(international standards) ISO 4217 currency code for the Brunei dollar.


١١

The Eastern Arabic numeral representing the number eleven.


BLZ

(international standards) ISO 3166-1 alpha-3 country code for Belize.


Alternative form of ± (ASCII fallback representation)

(sports) the plus-minus statistic for a player, which represents the number of points or goals scored while the player is on the playing surface, positive added for the player's team scoring for, negative added for opponent's team scoring against.

(sciences, mathematics) uncertainty range


JE

(international standards) ISO 3166-1 alpha-2 country code for Jersey since 2006.


NLD

(international standards) ISO 3166-1 alpha-3 country code for the Netherlands.


Exponential notation: 5 × 10²


A blank ballot box, usually to be filled with either ✓ or ✗.

☐ Yes! Send me_____________watch(es) at $235.00 each!

1987 May 20, The Rotarian, volume 150, number 5 (in English), Rotary International, →ISSN, page 53:

To be filled with ✓ or ✗, indicates agreement.

Select which ice cream flavors you like: (in this example, the surveyee only likes vanilla, among the given options)

Chocolate ☒

Strawberry ☒

Vanilla ☑

In a list, to be filled with either ✓ indicating agreement or ✗ indicating disagreement.

☐ Candidate 1

☐ Candidate 2

☒ Candidate 3

To be filled with ✓ or ✗, indicates a vote.


✓ (English symbol name tick or checkmark or check)

tick (English name symbol)
checkmark (English name symbol)
check (English name symbol)

Milk ✓
Eggs
Flour ✓

Things to do:
☑ Steal time machine
☑ Ruin science fair
☑ Pass off invention as my own!

2007, Steve Anderson, Meet the Robinsons (in English), Walt Disney Pictures:

Now that I’ve officially recovered from my epic experience, I can confirm that, yes, every single celeb and influencer imaginable was there to check out the hotel’s opening weekend (Chloe and Halle Bailey? ✔ Ellen Pompeo? ✔ Kendall Jenner? ✔✔✔ I mean, did you not see the pics?!).

2023 March 7, Gretty Garcia, “Yes, I *Did* Stay at the Same Hotel as Beyoncé in Dubai—and You Should Too”, in Cosmopolitan (in English):

I also did a long-wear test, as y'do and after scoffing my face with some food (read: I am feral when it comes to a midday snack, so what), the striking colour that I was wearing, named 'Jet', had stayed put. Pigment, check ✅.

2023 May 12, Lia Mappoura, “I tried Glossier's brand new G Suit lip crèmes so you don't have to – you're welcome”, in Cosmopolitan (in English):

Indicates an item (especially in a list) that is fulfilled or dealt with, e.g., products in a grocery list that were already bought.

☐ Candidate 1

☐ Candidate 2

☑ Candidate 3

Indicates one's preference or vote. Sometimes, a ballot (☐) can be filled with a checkmark: ☑.

2+2=4 ✓

2+2=5 ✗

Indicates correctness (with the exception of some languages, in which it is used with the opposite meaning).

Marco: Thanks for saving me. Again, that makes twenty-eight saves for you, and four for me, but... Who's counting?
[The checkmarks below are written on Marco's notebook.]
[Star's face] ✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓
[Marco's face] ✓✓✓✓

2015, "Sleep Spells", season 1, episode 7b of Star vs. the Forces of Evil [Star saves Marco's life.]

(computing, dated) ISO 2047 symbol for Acknowledge.


(mathematics) does not divide, is not a divisor of.


for all x not less than three

x is not less than three


From a variant of the Latin virgula, which separately developed into ∕ (division slash).

Three divides six or Three is a divisor of six.

(mathematics) Divides evenly into; used to mark divisors.


AB∥CD indicates that line AB is parallel to line CD


The caesura mark is a variant of the medieval Latin virgula (“scratch comma”).

Hwæt! wē Gār-Dena ‖ in gēar-dagum

Coordinate term: |

(IPA) Used to indicate a major prosodic break, which may be any level of prosodic unit if a single bar marks a metrical foot, or may mark the end of a final prosodic unit if a single bar marks the end of a continuing unit.

(lexicography) Used to indicate an unnaturalised or foreign word.

The angel of the Lord tarrieth | round about | them that ‖ fear him : | and de|livereth | them.

(music) A pointing mark in Anglican chant, used to mark the place in a verse which corresponds to the double barline in the chant, in circumstances where this is not the same place as the colon which divides the two halves of the verse; typically done when one half is very short.


mbar

(metrology) Symbol for millibar, an SI unit of atmospheric pressure equal to 10⁻³ bars.


Used as an award to children for school assignments or behavior


for all x not equivalent to three

x is not equivalent to three


If A ≻ B and B ≻ C, then, by the transitivity of preferences, A ≻ C.


(set theory) A generic strict order relation.

elementary substructure
elementary substructure

(logic) is an elementary substructure of


mathbf V_ω⊧ mathsf ZFCᶠⁱⁿ

T⊧φ if and only if T⊢φ

semantic consequence
semantic consequence

(mathematics, logic) semantic consequence


A vertical ellipsis, used to continue a list or table vertically.

18⋮9 means that 18 is divisible by 9.

A vertical ellipsis, used as a mathematical notation which means "is divisible by" or "is a multiple of".


⊢ developed from ⊦, used to signify assertions in Principia Mathematica; in turn derived from idiosyncratic two-dimensional notation for logic employed in Begriffsschrift.

mathsf PA⊢∀a∀b:a+b=b+a


If the function f is differentiable and concave, then f′(x₁)⋚f′(x₂) as x₁⋛x₂. That is f′(x₁) and f′(x₂) have the opposite relation as x₁ and x₂.

synonymous when used on its own, but antonymous when used jointly


At redshifts z ≳ 5, only ≈ 30 galaxies are currently known with confirmed redshifts

2006, Colin Goldblatt, “Constraining the population of 6≲z≲10 star-forming galaxies with deep near-IR images of lensing clusters”, in Arxiv (in English):


We use all these data to make a first attempt at constraining the density of star-forming galaxies present at 6 ≲ z ≲ 10 using lensing clusters.


α ⧟ β means α ⊸ β and β ⊸ α


Para indicar que uma quantidade é differente de outra, emprega-se o signal #x5C;gtrless.

1906, Serrasqueiro, José Adelino, Tratado de Algebra Elementar (in Portuguese):


Alternative form: <<<

(programming) Alternative form of <<< (left shift operator).


(computing, dated) ISO 2047 symbol for Carriage Return


Alternative form of ☺, smiling face; used to indicate happiness or amusement.


(computing, dated) ISO 2047 symbol for Horizontal Tabulation


(geometry) transversal intersection (the intersection of one-dimensional submanifolds of a two-dimensional manifold)


quadruple integral operator (integrating over four variables)


Alternative form: >>>

(programming) Alternative form of >>> (right shift operator).


ƒ

(photography) Used to denote an f-number, usually in the format “ƒ/N” where N is the f-number.


AAM

(international standards, aviation) IATA airport code for Mala Mala Airport, which serves Mala Mala Game Reserve, Mpumalanga, South Africa.


Da

(metrology) Symbol for the dalton, the atomic mass unit.