abb

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


aam

(international standards, obsolete) Former ISO 639-3 language code for Asa.


bbl

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


PM

Saint Pierre and Miquelon
Saint Pierre and Miquelon#English

(international standards) ISO 3166-1 alpha-2 country code for Saint Pierre and Miquelon.


aby

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


AD

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


lol

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


kun

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


AL

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


BM

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


ik

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


ab

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


AM

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


EU

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

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

International Organization for Standardization

International Securities Identification Number


AA

A standard size of dry cell battery between AAA and C.

(finance) Long-term bond credit rating by S&P Global Ratings and Fitch Ratings, indicating that a bond is high grade with very low risk of default.


fa

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


tao

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


f

Modification of upper case Latin letter F, from Greek Ϝ (W, “Digamma”), from Phœnician 𐤅 (W, “waw”), the ultimate source being probably Egyptian.

(IPA) a voiceless labiodental fricative.

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


ami

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


add

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


van

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


inc

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


eo

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


os

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


y

(metrology) Symbol for the prefix yocto-.

(IPA) a close front rounded vowel: the German ü-sound.

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

(superscript ⟨ʸ⟩, NAPA) palatalization, equivalent to IPA [ʲ].

Denoting an item that is twenty-fifth in a list.


and

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


um

micrometer; variant of μm used when the character μ is unavailable


ID

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


fy

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


is

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


vi

From either an Abbreviation of English Vietnamese or Vietnamese Tiếng Việt

abbrev

English <i class="Latn mention" lang="en">Vietnamese</i>

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


te

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


ace

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


A

From the Etruscan letter 𐌀 (a), from the Ancient Greek letter Α (A, “alpha”), derived from the Phoenician letter 𐤀 (ʾ, “aleph”), from the Egyptian hieroglyph 𓃾.

A. Go to the store. B. Get some food. C. Return home. D. Eat.

Person A had 5 apples, and person B...

A hypothetical item or person designated the first, usually when there are more than one.

Decimal 270 can be converted as duodecimal 1A6 or vigesimal DA.

(computing) The variable was a byte with value A0, or 160 in decimal.

Ten, especially used in bases above ten, such as duodecimal, hexadecimal, vigesimal and so on.

A standard size of dry cell battery, slightly larger than AA.

The Shorter Oxford English Dictionary on Historical Principles

Oxford University Press
w:Oxford University Press

A system of paper sizes with similar proportions, as A0, A1, A2, etc.

An academic grade lower than A+ but greater than A-.

(linguistics) A wildcard for an open vowel

(finance) Long-term bond credit rating by S&P Global Ratings and Fitch Ratings, indicating that a bond is upper-medium grade with low risk of default.


A

(chemistry, obsolete) Symbol for the element Argon, changed after 1956 to Ar.

atomic mass number
atomic mass number#English

(chemistry, physics) Symbol for mass number (“nucleon number”). Abbreviation of English atomic mass number..

Vienna Convention on Road Traffic
w:Vienna Convention on Road Traffic

(international standards) A category of vehicle licence under the Vienna Convention on Road Traffic, referring to motorcycles.


de

Coordinate term: deu

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


de

(radio slang) from (operator), this is (operator)


cat

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


day

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


map

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


new

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


dar

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


yet

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


elk

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


war

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


VB

(alchemy, archaic) abbreviation for bath of vapors, balneum vaporis


in

(international standards, obsolete) Former ISO 639-1 language code for Indonesian.


BX

The World Meteorological Organization country code for Belgium and Luxembourg


BX

World Intellectual Property Organization

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

w:Benelux Office for Intellectual Property

(international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for the Benelux Office for Intellectual Property.


MIA

I have visited more than half a dozen carrier training facilities, spent over 150 hours on jumpseats, piloted a Lockheed 1011 from MIA to LAX, visited numerous towers, rapcons, and centers, and discussed our commercial Air Transport System with everyone involved.

1975, John H. Reed, Transportation Safety Board, Safety Information (in English), page 30:

(international standards, aviation) IATA airport code for Miami International Airport, which serves Miami, Florida, United States.


be

English <i class="Latn mention" lang="en">Belarusian</i>

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


X

From the Etruscan letter 𐌗 (x, “ex”), from the Ancient Greek letter Χ (Kh, “chi”), created ex nihilo.

Coordinate term: / (spare)

X, Y and Z are pronounced big-X, big-Y, and big-Z, or cap-X, cap-Y, and cap-Z, to distinguish them from little x and little y, to be described in a moment.

2003, Charles A. Poynton, Digital Video and HDTV: Algorithms and Interfaces (in English), →ISBN, page 217:

One of the tristimulus values which, with Y and Z, defines coordinates in a three-dimensional color space. Pronounced (in English) big X or cap X.

(linguistics) A wildcard for any sound (consonant, vowel or tone).

(international standards) Substituted for the third letter of a currency code to denote the minor unit of that currency.


X

A hazard indicator, sometimes incorporated into standard labeling and signage systems.


or

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


my

Abbreviation of English Myanmar, formerly Burma, where Burmese is spoken.

English <i class="Latn mention" lang="en">Myanmar</i>

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


any

(international standards) language code for Anyin.


en

clipping

English <i class="Latn mention" lang="en">English</i>

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


it

Italian <i class="Latn mention" lang="it">italiano</i>

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


was

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


el

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


i

Pronunciation of IPA [iː]

* (mathematics, imaginary number): abbreviation of imaginary
* (engineering, electric current): abbreviation of French intensité du courant first used by M. André-Marie Ampère
* (computer programming, generic index): abbreviation of index
* (linguistics): abbreviation of identity

a+bi with a is real part and b is imaginary part

(mathematics, often in italics or bold) The imaginary unit; a fixed square root of -1. Graphically, i is shown on the vertical (y-axis) plane.

v=ir (Ohm's Law)

(engineering, often in bold) The current flow in an electric circuit, frequently measured in amperes.

(mathematics, programming) A common variable name representing a generic index, especially in loops.

(IPA, romanization) a close front unrounded vowel.

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

(international standards) transliterates Indic इ (or equivalent).

(financial mathematics) annual effective interest rate

(subscript, linguistics) indicates that two items are identical or coreferential (refer to the same thing). E.g. CVᵢCVᵢ means a sequence of consonant-vowel-consonant-vowel, where the two V's are the same vowel; Sallyᵢ ... sheᵢ means that 'she' refers to 'Sally'. A second identity may be indicated with j.


mi

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


pi

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


o

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

(phonetics, superscript ⟨ᵒ⟩) marks a labialized consonant.


rue

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


her

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


non

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


sun

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


men

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


ACT

(international standards, aviation) IATA airport code for Waco Regional Airport, which serves Waco, Texas, United States.


NT

Saudi Arabian–Iraqi neutral zone
w:Saudi Arabian–Iraqi neutral zone

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for the Saudi Arabian–Iraqi neutral zone from 1974 to 1993.

Near Threatened
w:Near-threatened species

(IUCN Red List) Abbreviation of Near Threatened.


SA

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


RJ

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

(sum of parts) The radius of Jupiter specifically.


RO

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


anu

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


TO

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


RN

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


PI

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


PE

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


ES

electrical conductance
electrical conductance

(metrology) Symbol for exasiemens, an SI unit of electrical conductance equal to 10¹⁸ siemens.


ES

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


BA

Bosnia and Herzegovina
Bosnia and Herzegovina#English

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


MG

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


MS

(metrology) Symbol for megasiemens, an SI unit of electrical conductance equal to 10⁶ siemens.


MS

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


NU

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


MA

(metrology) Symbol for megaampere, an SI unit of electrical current equal to 10⁶ amperes.


MA

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


RS

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


JA

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


MT

magnetic flux density
magnetic flux density

(metrology) Symbol for megatesla, an SI unit of magnetic flux density equal to 10⁶ teslas.


MT

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


SC

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


QE

(alchemy, archaic) abbreviation for quintessence, quinta essentia


MX

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


AP

w:African Regional Industrial Property Organization

(international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for the African Regional Industrial Property Organization.


ZA

(metrology) Symbol for zettaampere, an SI unit of electrical current equal to 10²¹ amperes.


ZA

From Dutch Zuid-Afrika (“South Africa”).

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


AC

Ascension Island
Ascension Island#English

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


GR

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


YC

(metrology) Symbol for yottacoulomb, an SI unit of electric charge equal to 10²⁴ coulombs.


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


ass

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


TL

(metrology) Symbol for teraliter (teralitre), an SI unit of fluid measure equal to 10¹² liters (litres).


TL

(international standards) ISO 3166-1 alpha-2 country code for Timor-Leste since 2002.


SE

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


YT

(metrology) Symbol for yottatesla, an SI unit of magnetic flux density equal to 10²⁴ teslas.


YT

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


NL

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


VC

Saint Vincent and the Grenadines#English

(international standards) ISO 3166-1 alpha-2 country code for Saint Vincent and the Grenadines.


GT

(metrology) Symbol for gigatesla, an SI unit of magnetic flux density equal to 10⁹ teslas.


GT

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


CS

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for Czechoslovakia from 1974 to 1993.

Serbia and Montenegro
Serbia and Montenegro#English

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for Serbia and Montenegro from 2003 to 2006.


AZ

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


CL

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


NF

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


PA

(metrology) Symbol for petaampere, an SI unit of electrical current equal to 10¹⁵ amperes.


PA

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


bap

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


AG

Antigua and Barbuda
Antigua and Barbuda#English

(international standards) ISO 3166-1 alpha-2 country code for Antigua and Barbuda.


CM

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


PU

United States Miscellaneous Pacific Islands#English

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for the United States Miscellaneous Pacific Islands from 1974 to 1986.


SK

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

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for Sikkim from 1974 to 1975.


OA

w:Organisation Africaine de la Propriété Intellectuelle

(international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for the African Intellectual Property Organization.


CI

(international standards) ISO 3166-1 alpha-2 country code for Côte d'Ivoire.


SL

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


IN

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


IL

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


FL

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

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


BS

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


zs

(metrology) Symbol for zeptosecond, an SI unit of time equal to 10⁻²¹ seconds.


CO

(chemistry) The molecular formula for carbon monoxide.


CO

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


AR

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

(alchemy, archaic) Abbreviation of aqua regia.

(alchemy, archaic) Abbreviation of balneum arenae (“sand bath”).

(alchemy, archaic) Abbreviation of lapis armenus (“Armenian stone”).


SI

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


DE

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

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


CT

Canton and Enderbury Islands
Canton and Enderbury Islands#English

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for the Canton and Enderbury Islands from 1974 to 1984.


GA

(metrology) Symbol for gigaampere, an SI unit of electrical current equal to 10⁹ amperes.; also called gigaamp


GA

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


TA

(metrology) Symbol for teraampere, an SI unit of electrical current equal to 10¹² amperes.


TA

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

Tristan da Cunha
Tristan da Cunha#English

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


CH

Abbreviation of Latin Cōnfoederātiō Helvētica (“Swiss Confederation”).

der

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


KY

Chosen because other options were already in use by other countries.

(international standards) ISO 3166-1 alpha-2 country code for the Cayman Islands.


HI

The molecular formula for hydrogen iodide (hydriodic acid).


HI

desc

English: H_I emission line, HI emission line, H-I emission line, H I emission line

English: H_I region, HI region, H-I region, H I region

(chemistry, spectroscopy) neutral atomic hydrogen, a neutrally charged atom of hydrogen


WV

(international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for Saint Vincent and the Grenadines.


RI

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


LA

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


ag

(metrology) Symbol for attogram, an SI unit of mass equal to 10⁻¹⁸ grams.


KS

(Kosovo) Unofficial two-letter code for the Republic of Kosovo.


MD

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


MI

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for Midway Atoll from 1974 to 1986.


art

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


ME

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


TN

(metrology) Symbol for teranewton, an SI unit of force equal to 10¹² newtons.


TN

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


PR

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


NC

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


MC

(metrology) Symbol for megacoulomb, an SI unit of electric charge equal to 10⁶ coulombs.


MC

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


MO

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


MN

(metrology) Symbol for meganewton, an SI unit of force equal to 10⁶ newtons.


MN

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


SD

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

(finance) Long-term bond credit rating by S&P Global Ratings, indicating that a bond is in default, with little prospect of debt recovery.


tan

trigonometric function
trigonometric function

(trigonometry) The trigonometric function tangent.


yes

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


ML

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


ML

(astronomy) Lunar mass: a unit of measurement, equal to the mass of the Moon.

(sum of parts) The mass of the Moon specifically.


NH

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for New Hebrides from 1974 to 1980.


CA

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


VA

(international standards) ISO 3166-1 alpha-2 country code for the Vatican City.


NE

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

(IUCN Red List) Abbreviation of not evaluated.


MB

(alchemy, archaic) abbreviation for bath of Mary, balneum mariae


bam

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


car

(international standards) ISO 639-2 & ISO 639-3 language code for Kari'na.


om

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


IMF

(international standards, aviation) IATA airport code for Imphal International Airport, which serves Imphal, Manipur, India.


bai

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


del

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


hi

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


bal

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


son

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


him

(international standards) ISO 639-2 language code for Western Pahari languages.


man

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


al

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


to

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


bel

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


arm

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


SAU

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


as

(metrology) Symbol for attosecond, an SI unit of time equal to 10⁻¹⁸ seconds.

attosecond

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


pam

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


ail

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


an

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


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 ⟨⠁⟩: ⡁ ⢁ ⣁

(Ethiopic Braille) opening digit indicator: cf. closing ⠆.


ia

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


lam

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


aku

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


ban

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


ben

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


dua

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


zas

(international standards) ISO 639-3 language code for Santo Domingo Albarradas Zapotec.


had

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


so

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


got

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


bid

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


ber

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


she

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


lit

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


he

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


dig

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


bad

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


ba

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


lay

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


bra

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


oar

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


bug

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


fit

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


bat

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


sat

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


ven

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


hit

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


UN

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


ROM

(international standards, obsolete) Former ISO 3166-1 alpha-3 country code for Romania from 1974 to 2002.


US

Borrowed from English US (“United States”).

(international standards) ISO 3166-1 alpha-2 country code for the United States.


UK

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


nin

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


sot

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


xab

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


act

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


USA

Borrowed from English USA (“United States of America”).

bor+

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


sog

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


sit

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


et

Possibly from either an Abbreviation of English Estonian or Estonian eesti

abbrev

English <i class="Latn mention" lang="en">Estonian</i>

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


pos

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


ice

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


rin

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


sin

trigonometric function
trigonometric function#English

(mathematics) The trigonometric function sine.

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


fil

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


mal

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


Coordinate term: □

A female family member in a family tree.

(phonetics) An unidentifiable or indeterminate segment.

(chemistry, obsolete) Oxygen (Daltonian symbol).


sal

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


q

(superscript ⟨𐞥⟩) – see ⟨𐞥⟩.


v

Pronunciation of IPA [ɑvvɑʔ] with the sound [v]

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

(UPA) a voiced labiodental approximant (IPA [ʋ], which it resembles in italic typeface).


j

(superscript ⟨ʲ⟩, IPA) palatalization ([j]-coloring) of a consonant; or a weak, fleeting or epenthetic [j].

℥j


l

Pronunciation of IPA [lːɑː, ɑllɑː] with the sound [l]

(superscript ⟨ˡ⟩) lateral release; also [l]-coloring or a weak, fleeting or epenthetic [l] – see ⟨ˡ⟩.

(linear) length (arclength is often denoted with a cursive l)


r

Pronunciation of IPA [rɑː, ɑrrɑː] with the sound [r]

(b) Used in broad transcription for any rhotic consonant, e.g. in English, French or Japanese where the ⟨r⟩ is not a trill [r].

(c) (superscript ⟨ʳ⟩) an [r]-trill release (of a plosive); a weak, fleeting or epenthetic [r].

(d) (superscript, obsolete) a non-trilled rhotic coloration or offglide of a vowel; a rhotic vowel, now formed with ⟨◌˞⟩ or a more-precise transcription such as ⟨ʴ⟩ – see ⟨ʳ⟩.

(transcription) used in several romanization systems of non-Latin scripts to represent various rhotic sounds:

Romanization of the Hebrew ר (“reish”, “resh”, “rēš”) in the Common Israeli, Hebrew Academy (1953 and 2006), and ISO 259 transliteration schemes

Romanization of רּ

rr (in the Hebrew Academy (1953 and 2006) and ISO 259 transliteration schemes)

Romanization of the Hebrew רּ (“reish”, “resh”, “rēš ḥāzāq”) in the Common Israeli transliteration scheme

the Hebrew רּ

(chemistry) of a tactic diad, having structural units in opposition.

(physics) relative. E.g. vr or vᵣ for relative velocity.


bi

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


ewe

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


bo

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


san

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


p

(superscript ⟨ᵖ⟩, IPA) [p]-onset (prestopping / preocclusion / preplosion), [p]-release (e.g. ⟨kᵖ⟩ for [k͡p]), [p]-coloring, or a weak, fleeting or epenthetic [p].

en:power of, negative logarithm of a concentration

(chemistry, in combination) power of; the negative logarithm of a concentration, as in pH or pOH


kin

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


t

(IPA) a voiceless alveolar/dental plosive.

(superscript ⟨ᵗ⟩, IPA) [t]-onset (prestopping / preocclusion / preplosion), [t]-release, [t]-coloring, or a weak, fleeting or epenthetic [t].

0.7 mmt


gem

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


g

Symbol for the gram, an SI unit of mass.

Symbol for gravitational acceleration, approximately 9.81 m/s² or 32 ft/sec² at the earth's surface. Distinguished from G.

(IPA) Alternative form of ɡ (voiced velar stop).

(superscript ⟨ᵍ⟩, IPA) Alternative form of ᶢ.


b

Pronunciation of IPA [bɑː, ɑbbɑː] with the sound [b]

Modification of capital letter B by dropping its upper loop, from the Greek letter Β (“Beta”).

(superscript ⟨ᵇ⟩, IPA) [b]-onset (prestopping / preocclusion / preplosion), [b]-release (e.g. ⟨ɡᵇ⟩ for [ɡ͡b]), [b]-coloring, or a weak, fleeting or epenthetic [b].


k

(geology) The permeability of a material for fluids.

(physics) The spring constant of an elastic material.

Boltzmann's constant
Boltzmann's constant


w

Pronunciation of IPA [wːɑː, ɑwwɑː] with the sound [w]

Ꜳꜳ Ææ ᴁᴭ Ǽǽ Ǣǣ Ꜵꜵ Åå Ꜷꜷ Ꜹꜹ Ꜻꜻ Ꜽꜽ ct ȸ Ǳǲǳ Ǆǅǆ ᴂᵆ ᴔ & ﬀ ﬁ ﬃ ﬂ ﬄ ℔ Ĳĳ Ǉǈǉ Ỻỻ Ŋŋ Ǌǋǌ Œœ ɶ Ꝏꝏ Ȣȣᴕ ȹ ẞß ﬅﬆ ᵫ Ůů Ww Ꝡꝡ

(IPA) a voiced labial-velar (or, more precisely, labialized velar) approximant.

Specifically, on a vowel letter: an [u] off-glide (diphthong) or a protruded (as opposed to compressed) vowel, e.g. Swedish /yʷː/.

(superscript ⟨ʷ⟩, IPA) labialization ([w]-coloring) or a consonant or vowel; or a weak, fleeting or epenthetic [w].


h

(superscript ⟨ʰ⟩) (after a consonant) aspiration; (before a consonant) pre-aspiration; otherwise a weak, fleeting or epenthetic [h] – see ʰ.

(IPA) a voiceless glottal fricative or approximant.

(UPA) a voiceless laryngeal approximant (IPA [h̞])

(metrology) symbol for the prefix hecto-, indicating multiplication by 100

PP: ^·hh⎡y’know-, / R: [I used it today Doris for the first time. / You used it today? / R: yea(huh)s (Smiling voice) / (0.3) / PP: t^·hhhh And ah’ve another voice come, an’ she says, she’s just bought a new cooker you know. ^·hh they know-, they get to know everythi:ng,

2006, Robin Wooffitt, “Analysing the Organization of Successful Demonstrations of Paranormal Cognition”, in The Language of Mediums and Psychics: The Social Organization of Everyday Miracles (in English), Ashgate Publishing, →ISBN, page 70:

Bee: ^·hhh Uh::, (0.3) I don’know I guess she’s aw- she’s awright she went to thee uh:: hhospital again tihda:y,[…]Hearable aspiration is shown where it occurs in the talk by the letter h – the more h’s, the more aspiration. The aspiration may represent breathing, laughter, etc. If it occurs inside the boundaries of a word, it may be enclosed in parentheses in order to set it apart from the sounds of the word. If the aspiration is an inhalation, it is shown with a dot before it (usually a raised dot) or a raised degree symbol. Bee: [Ba::]sk(h)etb(h)a(h)ll? (h)(°Whe(h)re.)[…]

2010, John Heritage, Steven Clayman, “Transcript Symbols”, in Talk in Action: Interactions, Identities, and Institutions (in English), →ISBN, pages 284 and 286:

.hhhh (0.1) donc pour moi les hommes eu::h

2015, Simona Pekarek Doehler, Elwys De Stefani, Anne-Sylvie Horlacher, “The hanging topic construction as an interactional resource”, in Time and Emergence in Grammar: Dislocation, Topicalization and Hanging Topic in French Talk-in-Interaction (Studies in Language and Social Interaction; 28) (in English), John Benjamins Publishing Company, →ISBN, section 5 (Aphoristic HT formulations as closing devices), page 210:


m

Pronunciation of IPA [mːɑː, ɑmmɑː] with the sound [m]

International Phonetic Alphabet
International Phonetic Alphabet

(phonetics) used in the International Phonetic Alphabet and in several romanization systems of non-Latin scripts to represent the voiced bilabial nasal (/m/), including Cyrillic м, the beginning of various kana including ま (ma), and Korean jamo ㅁ (mieum).

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

International System of Units
International System of Units

metre, the basic unit of length in the International System of Units

1798 Letter from William Short to Thomas Jefferson

Having made a divorce with politics as I have already mentioned I have only to trouble you on my personal affairs ... —The principle & most pressing is that of the 9. m. dollars

(music) mezzo, as in mezzo piano and mezzo forte

(chemistry) Of a tactic diad, having structural units in identical orientation.


n

From the old Latin N, from the Greek Ν (nu), from an archaic reversed Greek N, from the Phoenician symbol 𐤍; possibly from an earlier Egyptian hieroglyph of a resting Egyptian cobra, D (𓆓).

(superscript ⟨ⁿ⟩) nasal release (of any articulation), prenasalization, [n]-coloring or a weak, fleeting or epenthetic [n] – see also ⁿ.

(mathematics) An arbitrary natural number.


wal

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


d

Pronunciation of IPA [dɑː, ɑdːɑː] with the sound [d]

(mathematics) the (path-independent, exact) differential of a quantity

(superscript ⟨ᵈ⟩, IPA) [d]-onset (prestopping / preocclusion / preplosion), [d]-release, [d]-coloring, or a weak, fleeting or epenthetic [d].

(financial mathematics) annual effective discount rate


fox

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


c

Pronunciation of IPA [cɑː, ɑccɑː] with the sound [c]

Modification of upper case letter C, from Etruscan 𐌂 (c), from Ancient Greek Γ (G, “Gamma”), from Phoenician 𐤂 (g, “gimel”).

May stand in for palatalized [kʲ], [tʲ], or as a more economical transcription of [t͜ʃ] or a similar ch-like sound.

(superscript ⟨ᶜ⟩, IPA) [c]-onset (prestopping / preocclusion / preplosion), [c]-release, [c]-coloring, or a weak, fleeting or epenthetic [c].

(superscript ⟨ᶜ⟩) A common rendering of the Semitic ayin, graphically resembling both Somali c and Semiticist ⟨ʿ⟩.


c

From centi-, from Latin centum (“hundred”).


c

(physics) The speed of light, 2.99792458 × 10⁸ m/s.

(oceanography, meteorology) The speed of a fluid wave (water or air).


c

(mathematics) The space of convergent sequences.


run

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


s

(superscript ⟨ˢ⟩) [s]-fricated release, [s]-coloring, or a weak, fleeting or epenthetic [s] – see ⟨ˢ⟩.

Symbol for second, an SI unit of measurement of time.


z

Pronunciation of IPA [zɑː, ɑzzɑː] with the sound [z]

(metrology) Symbol for the prefix zepto-.

f(x,y,z)= sin x+ cos y+ tan z

(mathematics) Used to denote a real variable when x and y are already in use.

coordinate system
coordinate system#English

(mathematics) Used to denote the third coordinate in three-dimensional Cartesian and cylindrical coordinate systems.

‖z‖=z·̄z

(mathematics) Used to denote a complex variable.

(statistics) Used to denote a value of a standard normal random variable.

Lushootseed uses the affricate convention for its alphabetic letter ⟨dᶻ⟩.

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


u

Pronunciation of IPA [uː]

(IPA, phonetics) a close back rounded vowel.

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

(international standards) transliterates Indic उ (or equivalent).


e

Close-mid front unrounded vowel
e
e (mathematical constant)

Pronunciation of IPA [eː]

Modification of capital letter E in uncial script, from Ancient Greek Ε (E, Epsilon).

en:base of natural logarithms, about 2.71828

(mathematics) The base of natural logarithms, also known as Euler's number, a transcendental number with a value of approximately 2.718281828459…

1.2566e-6 = 1.2566 × 10⁻⁶

en:exponentiation symbol in scientific notation

(sciences, computing) Symbol separating mantissa from the exponent in scientific notation.

(IPA) a close-mid front unrounded vowel.

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

a ∘ e = e ∘ a = a

(algebra, group theory) identity element.

In addition, we included here another effect—the modulation of the radiation pressure force by the orbital eccentricity of Mars, e#x5F;M#x3D;0.093—an effect, whose existence was first pointed out by Juhász and Horányi (1995) […]

2006 August, Alexander V. Krivov, Artem G. Feofilov, Valeri V. Dikarev, “Search for the putative dust belts of Mars: The late 2007 opportunity”, in Planetary and Space Science, volume 54, numbers 9–10 (in English), →DOI, page 873:


ich

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


ile

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


hun

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


lui

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


aa

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


ABM

(international standards, aviation) IATA airport code for Northern Peninsula Airport, which serves Bamaga, Queensland, Australia.


MP

Northern Mariana Islands
Northern Mariana Islands#English

(international standards) ISO 3166-1 alpha-2 country code for the Northern Mariana Islands since 1986.


PHP

(international standards) ISO 4217 currency code for the Philippine peso.


eng

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


GB

From English Great Britain, taken from the full name of the country, United Kingdom of Great Britain and Northern Ireland. The reasoning provided by the International Organization for Standardization is, “Since name components like Republic, Kingdom, United, Federal or Democratic are used very often in country names we usually do not derive the country code elements from them in order to avoid ambiguity. The name components United and Kingdom not being appro[p]riate for ISO 3166-1, the code GB for the United Kingdom was created from Great Britain.”

noitalic

(international standards) ISO 3166-1 alpha-2 country code for the United Kingdom.


PS

electrical conductance
electrical conductance

(metrology) Symbol for petasiemens, an SI unit of electrical conductance equal to 10¹⁵ siemens.


PS

(international standards) ISO 3166-1 alpha-2 country code for Palestine since 1999.


bij

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


ABC

(international standards, aviation) IATA airport code for Albacete Airport, which serves Albacete, Castilla–La Mancha, Spain.


ç

From ⟨ꝣ⟩, the Visigothic form of the letter z, which resembled a C with a subscript z.

(superscript ⟨ᶜ̧⟩, IPA) [ç]-fricated release of a plosive (e.g. [cᶜ̧] or [kᶜ̧]), sometimes implying an affricate (e.g. ⟨cᶜ̧⟩ for [c͡ç]); [ç]-coloring; or a weak, fleeting or epenthetic [ç].


ADH

(international standards, aviation) IATA airport code for Aldan Airport, which serves Aldan, Sakha, Russia.


ADP

(international standards, aviation) IATA airport code for Ampara Airport, which serves Ampara, Eastern Province, Sri Lanka.


ADP

(international standards, historical) ISO 4217 currency code for the former Andorran peseta; a currency used from 1983 to 2003.


FM

Federated States of Micronesia
Federated States of Micronesia#English

(international standards) ISO 3166-1 alpha-2 country code for the Federated States of Micronesia since 1986.


ë

(NAPA) a close-mid back unrounded vowel (IPA [ɤ]).


ha

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


sea

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


CD

Democratic Republic of the Congo#English

(international standards) ISO 3166-1 alpha-2 country code for the Democratic Republic of the Congo since 1997.

Conservation Dependent
w:Conservation-dependent species

(IUCN Red List, obsolete) Abbreviation of Conservation Dependent.


cop

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


NZ

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


km

(metrology) Symbol for kilometre (kilometer), an SI unit of length equal to 10³ metres (meters).

kilometre

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


NPR

(international standards) ISO 4217 currency code for the Nepalese rupee.


cm

Researchers have come up with a way to glimpse the infant Universe by decoding the earliest ripples in its light.
They say this can be achieved by capturing the specific radio wavelength of 21cm from the heavens.
The trick is to tell the difference between 21cm waves from our galaxy and those from distant, ancient sources.

2012 June 20, Jason Palmer, “Dark matter tracks could give earliest view of Universe”, in bbc.co.uk (in English), retrieved 2012-06-20:

(metrology) Symbol for centimeter (centimetre), an SI unit of length equal to 10⁻² meters (metres).


TV

(metrology) Symbol for teravolt, an SI unit of electromotive force equal to 10¹² volts.


TV

(international standards) ISO 3166-1 alpha-2 country code for Tuvalu since 1977.


cor

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


ln

(mathematics): Probably from New Latin logarithmus naturalis (“natural logarithm”). At the time of the discovery of logarithms and e, Latin was the language of science.

der

ln x= log ₑx
ln e=1

(mathematics) natural logarithm; logarithm to the base e.

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


cl

(metrology) Symbol for centiliter (centilitre), an SI unit of fluid measure equal to 10⁻² liters (litres).


mg

(metrology) Symbol for milligram, an SI unit of mass equal to 10⁻³ grams.

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


cg

(metrology) Symbol for centigram, an SI unit of mass equal to 10⁻² grams.


kl

(metrology) Symbol for kiloliter (kilolitre), an SI unit of fluid measure equal to 10³ liters (litres).

kiloliter

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


dg

Melt index was constant at approximately 5 dg/min.

1993 Jan–Apr, TAPPI Journal, volume 76 (in English), Technical Association of the Pulp and Paper Industry, page 170:

(metrology) Symbol for decigram, an SI unit of mass equal to 10⁻¹ grams.


ADA

(international standards, aviation) IATA airport code for Adana Şakirpaşa Airport, which serves Adana, Turkey.


ADA

La fornitura di ADA attualmente in circolazione ammonta a 25.927.070.538 unità, mentre la fornitura totale è fissata a 31.112.483.745 ADA. Il prezzo di un ADA nel periodo di raccolta dei giudizi di somiglianza (Marzo-Aprile) si attesta a quasi 0,2 $ (coinmarketcap.com).

2017–2018, Federico Spitaleri, Definizione di mappe percettive delle criptovalute con maggiore capitalizzazione attraverso l’utilizzo del multidimensional scaling (thesis; in Italian), Luiss Guido Carli, archived from the original on 2022-06-07, page 38:

En estas fechas escogidas vemos la evolución que ha tenido ADA de 1 enero de 2021 a un precio de 0,14 euros por ADA y su máximo histórico se sitúa sobre 2,03 euros por ADA a 16 mayo de 2021.

2021, J.W. Benazco Ángel, G. García Machiñena Morell, Proyecto Cardano, tercera generación de criptomonedas (thesis; in Spanish), University of La Laguna, page 15:

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


kg

(metrology) Symbol for kilogram, an SI unit of mass equal to 10³ grams.

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


TM

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


ml

(metrology) Symbol for millilitre, an SI unit of fluid measure equal to 10⁻³ litres.


ml

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


hl

(metrology) Symbol for hectoliter (hectolitre), an SI unit of fluid measure equal to 10² liters (litres).


hm

(metrology) Symbol for hectometer (hectometre), an SI unit of length equal to 10² meters (metres).


AAA

A standard size of dry cell battery smaller than AA.

(finance) Long-term bond credit rating by S&P Global Ratings and Fitch Ratings, indicating that a bond is of the highest grade with minimal risk of default.

(international standards, aviation) IATA airport code for Anaa Airport, which serves Anaa, French Polynesia.


mm

(metrology) Symbol for millimetre (millimeter), an SI unit of length equal to 10⁻³ metres (meters).


dl

(metrology) Symbol for decilitre (deciliter), an SI unit of fluid measure equal to 10⁻¹ litres (liters).


XXX

From the reduplication of X (“a placeholder for any letter or word”).
The currency code was adopted in October 1976 and officially introduced in 1978 with ISO 4217 by the International Organization for Standardization (ISO).

rdp

Elongated form of X (“a placeholder for any letter or word”).

(computing) Used as a placeholder in source code to mark that some work still has to be done.

(international standards) Reserved ISO 4217 currency code representing 'no currency', to be assigned when a code is required for a transaction that does not involve currency.

(data) Of a machine-readable passport: unspecified nationality.

XXB

a refugee as defined by the 1951 Convention Relating to the Status of Refugees

XXC.

a refugee, but not as defined by the 1951 convention


XXX

From English XXX (“hardcore pornography”), from the reduplication of X (“an age rating denoting content suitable for adults”).

hardcore pornography
hardcore pornography#English

Denotes hardcore pornography or, more generally, pornographic content.


XXX

Saint Andrew's Cross
XXX
coat of arms of Amsterdam
flag of Amsterdam

From the flag or coat of arms of Amsterdam, which features three white or silver Saint Andrew's Crosses.

(rare) Amsterdam: the capital city of the Netherlands.


CC

Cocos (Keeling) Islands
Cocos (Keeling) Islands#English

(international standards) ISO 3166-1 alpha-2 country code for the Cocos (Keeling) Islands.

(finance) Long-term bond credit rating by Fitch Ratings, indicating that a bond is low grade with extremely high risk of default.


SM

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


dm

(metrology) Symbol for decimeter (decimetre), an SI unit of length equal to 10⁻¹ meters (metres).


kPa

(metrology) Symbol for kilopascal, an SI unit of pressure and stress equal to 10³ pascals.


ta

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


dag

(metrology) Symbol for decagram, an SI unit of mass equal to 10¹ grams.


Cd

(physics) The drag coefficient (C_d or Cₓ), describing a characteristic amount of aerodynamic drag caused by fluid flow.


AI

(international standards) ISO 3166-1 alpha-2 country code for Anguilla since 1985.

French Territory of the Afars and the Issas#English

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for Afars and the Issas from 1974 to 1977.


Tc

It implies that if the critical temperature T_c is unique, then it must occur when x = 1, v = q^(1/2)

1973, “Potts model at the critical temperature”, in Journal of Physics C: Solid State Physics, volume 6, number 23, →DOI:

critical temperature
critical temperature


MF

(metrology) Symbol for megafarad, an SI unit of electrical capacitance equal to 10⁶ farads.


MF

Saint Martin
Collectivity of Saint Martin#English

(international standards) ISO 3166-1 alpha-2 country code for Saint Martin since 2007.


dal

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

(metrology) Symbol for decalitre, an SI unit of fluid measure equal to 10¹ litres.


PC

(metrology) Symbol for petacoulomb, an SI unit of electric charge equal to 10¹⁵ coulombs.


PC

w:Trust Territory of the Pacific Islands

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for the Trust Territory of the Pacific Islands from 1974 to 1986.


PG

Papua New Guinea
Papua New Guinea#English

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


XL

(chiefly clothing) extra large (the manufactured size)


Pm

(metrology) Symbol for petameter (petametre), an SI unit of length equal to 10¹⁵ meters (metres).


hg

(metrology) Symbol for hectogram, an SI unit of mass equal to 10² grams.


Tm

(metrology) Symbol for terametre, an SI unit of length equal to 10¹² metres.


Rn

(chemistry, physics) radon; ²²²₈₆Rn (radon-222); an isotope of radon, used when radon-220 is called thoron (Tn) and radon-219 is called actinon (An)


Pr

Pr(B|A)=(Pr(A|B)·Pr(B))/(Pr(A))


nah

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


Tl

(metrology) Symbol for teraliter (teralitre), an SI unit of fluid measure equal to 10¹² liters (litres).


co

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


dam

(metrology) Symbol for decameter (decametre), an SI unit of length equal to 10¹ meters (metres).

decameter

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


au

astronomical unit
astronomical unit#English

IAU recommended unit symbol for astronomical unit

ua

BIPM recommendation for the unit symbol of astronomical unit


ca

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


sn

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


III

Third, in the context of denoting the third person in a family or an office with the same name.

(inorganic chemistry) Specifying an oxidation state of 3

(spectroscopy) Describing an atom that has lost two electrons


sg

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


IV

Used to indicate an ordinal number; the fourth (common as a name suffix)

(inorganic chemistry) Specifying an oxidation state of 4


LI

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


ga

clipping

Irish <i class="Latn mention" lang="ga">Gaeilge</i>

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


VI

United States Virgin Islands
United States Virgin Islands#English

(international standards) ISO 3166-1 alpha-2 country code for the United States Virgin Islands.


FX

Metropolitan France
Metropolitan France#English

(international standards, obsolete) Former ISO 3166-1 alpha-2 country code for Metropolitan France from 1993 to 1997.

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

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


mt

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


SO

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


li

logarithmic integral
logarithmic integral

(mathematics) The symbol for the logarithmic integral function.

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


MM

(international standards) ISO 3166-1 alpha-2 country code for Myanmar since 1989.


alb

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


eu

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


lu

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


pu

electrical engineering
electrical engineering


ce

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


tri

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


mus

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


ho

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


8 (number)
8#Evolution of the Arabic digit

A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ८ (8)). See 8 § Evolution of the Arabic digit for more.

A digit in the decimal system of numbering, and also hexadecimal.

(phonetics, Sinosphere, often superscript) tone number 8, typically identified with light entering yang ru (陽入)


jib

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


A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ४ (4)), a cursive form of four lines (to represent the number four) arranged in the shape of a cross (resembling +). See 4 § Evolution of the Hindu-Arabic digit for more.

A digit in the decimal system of numbering, and also in octal, and hexadecimal.

, depending on other values

(phonetics, often superscript) The pitch of a tone, either high or low depending on local convention (though not as high or low as 5, if '5' is also used).

(phonetics, Sinosphere, often superscript) The tone number 4, typically identified with light rising yang shang (陽上). May be identified with entering ru tone (入) if the yin–yang distinction is not made.


A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ३ (3)), from a cursive form of three lines to represent the number three. See 3 § Evolution of the Arabic digit for more.

A digit in the decimal system of numbering, as well as octal, and hexadecimal.

m³ stands for cubic meter.

(superscript) The cube of a number or a unit.

, depending on other values

(phonetics, often superscript) the pitch of a tone, perhaps most commonly mid-pitch, but it may instead be high or low depending on local convention (e.g. the highest or lowest pitch if only the numbers 1–3 are used)

(phonetics, Sinosphere, often superscript) tone number 3, typically identified with dark rising yin shang (陰上). May be identified with departing qu tone (去) if the yin–yang distinction is not made.


A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ५ (5)). See 5 § Evolution of the Arabic digit for more.

(phonetics, often superscript) the pitch of a tone, either high or low depending on local convention; '5' is most commonly the highest or lowest pitch (but see 6)

(phonetics, Sinosphere, often superscript) tone number 5, typically identified with dark departing yin qu (陰去)


A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ६ (6)). See 6 § Evolution of the Hindu-Arabic digit for more.

(music, superscript) an indicator that a triad is in first inversion.

(phonetics, often superscript) the pitch of a tone that is more extreme than 5; it will be higher or lower depending on local convention.

(phonetics, Sinosphere, often superscript) tone number 6, typically identified with light departing yang qu (陽去).


A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ९ (9)). See 9 § Evolution of the Hindu–Arabic digit for more.

(phonetics, Sinosphere, often superscript) tone number 9, in some cases when the language does not have the usual 4 to 8 categories.


ne

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


A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ७ (7)). See 7 § Evolution of the Arabic digit for more.

(music, superscript) an indicator that a chord is a dominant or major seventh chord

(phonetics, Sinosphere, often superscript) tone number 7, typically identified with dark entering yin ru (陰入)


kaj

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


Derives from overset Io, an abbreviation of either interiectiō (“interjection”) or the interjection iō (“hey!”), placed at the end of an exclamation to mark it as such. It expresses admiratio (“awe, wonderment”) in the clause.

5! = 5 × 4 × 3 × 2 × 1 = 120

five factorial equals 120

(mathematics) The factorial: the result of a multiplication of all integers from 1 to the given number.

(Fb4! 10.c3 suivi de De7 eut été plus précis)

1983, Claude Santoy, Échecs et maths (in French), Marabout,, →ISBN, page 134:

(Bb4! 10.c3 followed by Qe7 would have been more efficient)

programming language
programming language

(computing, in many programming languages) A Boolean negation, the not operator, serving to invert the truth value of what follows.

(computing, e-mail) Formerly used as a separator between hostnames in an e-mail address for the purpose of routing a message (called bang path notation).

(computing, IRC) Used as a separator between a user's nickname and ident.


Tenth century “West Arabic” variation of the Nepali form of Hindu-Arabic numeral ٠ (compare Devanāgarī script ० (0)), adopted for use with the Latin script in Europe. See 0 § History for more.

0̸

slashed zero, available only as a combination of Unicode characters, variation selector or through font features

(Arabic digits) The cardinal number zero, indicating absence of any quantity.

15 × 134 = 2010

0000 0001₂

0x1000E001 (hexadecimal notation)

A digit in decimal, binary, and every other base numbering system, indicating the absence of any quantity in a given place value.

x5C;exists#x5C;,#x5C;mathbf#x7B;0#x7D;#x3A;#x5C;foralla#x5C;inA#x3A;#x5C;mathbf#x7B;0#x7D;#x2B;a#x3D;a#x2B;#x5C;mathbf#x7B;0#x7D;#x3D;a

(mathematics) The identity element with respect to addition.

f : Bᵏ → B : B = {0, 1}

A&B&C=0 → A=0 || B=0 || C=0

(mathematics, computer science) A Boolean or truth value corresponding to false.

(computing) Indicates that the number that follows is in octal.

select currency expressions containing ‘0’

(phonetics, often superscript) The pitch of a tone that is more extreme than 1 (higher or lower, depending on local convention; e.g. 0 is the highest tone in Chatino).

(phonetics, Sinosphere, often superscript) Lack of an inherent tone; the pitch depends on the tones of the surrounding syllables.


ti

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


A West Arabic numeral, ultimately from Indic numerals (compare Devanagari २ (2)), from a cursive form of two lines to represent the number two. See 2 § Evolution for more.

A digit in the decimal system of numbering, as well as octal, and hexadecimal.

A rotational symmetry element in the Hermann-Mauguin notation, indicating a rotation over π (twofold axis).

(mathematics) The two-element Boolean algebra, two-point discrete space or a (canonical) two-element set.

m² stands for square meter.

n² is usually pronounced as "n squared".

(superscript) The square of a number or a unit.

, depending on other values

(phonetics, often superscript) the pitch of a tone, whose value depends on local convention (e.g. nearly as high or as low as 1, if four or more numbers are used; mid pitch if the numbers 1–3 are used; or contrasting with 1 if only '1' and '2' are used)

(phonetics, Sinosphere, often superscript) tone number 2, typically identified with light level yang ping (陽平). May be identified with rising shang tone (上) if the yin–yang distinction is not made.

Norwegian/Swedish toneme 2 has also been transcribed with a double stress mark, that is ⟨ˈˈ⟩, as well as ⟨ˇ⟩, ⟨˟⟩ and ⟨ˆ⟩.

(linguistics, superscript) accent 2 in Norwegian, Swedish and Limburgish.


Tenth century “West Arabic” variation of the Nepali form of Hindu-Arabic numerals (compare Devanagari script १ (1, “éka”)), possibly influenced by Roman numeral Ⅰ, both ultimately from using a single stroke to represent the number one. See 1 § As a digit on WikipediaWikipedia for more.

The cardinal number one, a single thing or unit.

15 × 134 = 2010

0010 0011₂ (the number 35 in binary notation)

0x1000E001 (the number 268492801 in hexadecimal notation)

A digit in decimal and every other base numbering system, including binary, octal, and hexadecimal.

a×1 = a

(mathematics) The identity element with respect to multiplication in a ring.

(computer science) Bit state corresponding to binary digit 1, or on or true.

f : Bᵏ → B : B = {0, 1}

(mathematics) A Boolean or truth value corresponding to true.

topological space
topological space#English

(mathematics) The one-point topological space, trivial ring, trivial group, a category with a single object or a (canonical) singleton.

indicator function
indicator function#English

(mathematics, set theory) indicator function of a set.

(phonetics, often superscript) the pitch of a tone, either high or low depending on local convention; '1' is most commonly the highest or lowest pitch (but see 0)

(phonetics, Sinosphere, often superscript) tone number 1, typically identified with dark level yin ping (陰平). May simply be level ping tone (平) if the yin–yang distinction is not made.

Norwegian/Swedish toneme 1 is sometimes transcribed with a simple primary stress mark, that is ˈ.

(linguistics, superscript) accent 1 in Norwegian, Swedish and Limburgish.


ele

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


der

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


am

(metrology) Symbol for attometer (attometre), an SI unit of length equal to 10⁻¹⁸ meters (metres).

attometer

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


pa

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


ar

abbrev

English <i class="Latn mention" lang="en">Arabic</i>

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


zoo

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


phi

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


lad

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


es

Spanish <i class="Latn mention" lang="es">español</i>

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


es

WX HR COLD ES RAINY


A stylized form of Latin et (“and”). Romans used such symbols (ligatures) from at least the first century C.E., but the character may not have acquired its present form until the advent of calligraphy in the Middle Ages. Compare ⁊ and +, of same meaning and similar derivation.

programming language
programming language#English

(programming) Used in some programming languages for different purposes.

1 & 0 = 0

Used to represent the binary operator and.

(networking) In a URL, separates each field-value pair of a query string.

(Internet slang, subculture) Used to represent multiplicity.


(card games) The symbol on playing cards for spades.


(card games) Symbol on playing cards for clubs.


(card games) The symbol on playing cards for clubs.


(card games) A symbol on playing cards for diamonds.

In its hearty directness, “Winner” suggests that being mad as hell at a system that’s out of whack is as American as Hollywood itself. ♦

2024 September 11, Richard Brody, ““Winner” Takes Political Comedy Seriously”, in The New Yorker (in English):

Used as an end mark to indicate the end of an article.


Cutest family ever. ❤ [subtitle]

2024 July 12, Mehera Bonner, “Serena Williams's Daughter Olympia Made an Adorable Appearance on the ESPYS Red Carpet!”, in Cosmopolitan:

just about gave me a ❤ attack

Meanwhile, pro partner Ezra Sosa looked absolutely shocked, bless his ❤.

2024 September 25, Mehera Bonner, “Anna Delvey Said She’s Taking “Nothing” From ‘DWTS’ and Ezra Sosa Had the Funniest Reaction”, in Cosmopolitan:

If you want to take this boy on, do it on the Go board. I'll teach him a lesson. Play a game! ♡

2004, Hikaru no Go volume #2 (English release), Viz, page 14

An emoticon used in Japanese manga, indicating a smooth tone of voice, implying happiness, or love, or lust, etc.


From Italian ottava (“octave”). Since the 20th century, the "a" has sometimes been interpreted as representing alta in Italian ottava alta (“octave higher”); compare 8vb.

(music) An instruction to play one octave higher or lower than indicated.


la

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


kru

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


tok

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


ach

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


se

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


sel

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


chi

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


way

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


AS

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


ido

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


ADO

(international standards, aviation) IATA airport code for Andamooka Airport, which serves Andamooka, South Australia, Australia.


arc

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


ADC

(international standards, aviation) IATA airport code for Andakombe Airport, which serves Andakombe, Eastern Highlands, Papua New Guinea.


ADN

(international standards, aviation) IATA airport code for Andes Airport, which serves Andes, Antioquia, Colombia.


ADN

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

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


los

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


HK

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


auf

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


cos

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


yam

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


lug

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


est

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


gab

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


aal

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


mug

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


fo

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


fan

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


lex

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


From the first letter of Latin lībra (“pound”). The symbol is derived from the mediaeval tradition of placing a stroke over a letter or letters of a word (in this case L) to indicate an abbreviation; when letters have ascenders like L, the stroke frequently passes through that ascender. £ is thus cognate with the pound sign #, which was similarly derived from lb with a stroke through the ascenders.

Flanders was able to flog his piece of land, for which he had originally paid £4,000, to one of the largest gold-mining corporations for something like a couple of million smackers.

2007, Dave Lee (jazz musician), Nothing Rhymes with Silver 2, page 78:

various other currencies called pound or lira.


doh

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


si

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


fah

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


ee

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


lah

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


wen

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


yi

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


ky

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


nur

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


zu

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


log

if x=bʸ then log _b(x)=y


ny

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


tup

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


rob

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


ty

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


doe

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


rad

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


kip

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


kon

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


per

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


ton

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


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


gel

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


tik

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


kom

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


ter

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


bos

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


lid

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


bom

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


hai

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


sik

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


ja

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


kid

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


gig

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


pea

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


som

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


ada

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


mos

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


aim

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


oca

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


kam

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


nya

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


cup

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


abu

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


den

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


da

(metrology) deca-, indicating multiplication by 10

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


DIN

From the initials of German Deutsches Institut für Normung.

A formerly used logarithmic expression of the speed of a photographic film, plate, etc.; high-speed films have high numbers.

Deutsches Institut für Normung
film speed#DIN


CAD

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


IO

British Indian Ocean Territory
British Indian Ocean Territory#English

(international standards) ISO 3166-1 alpha-2 country code for the British Indian Ocean Territory.


DAC

(international standards, aviation) IATA airport code for Hazrat Shahjalal International Airport, which serves Dhaka, Bangladesh.


SCR

(international standards) ISO 4217 currency code for the Seychelles rupee.


AAC

(international standards, aviation) IATA airport code for El Arish International Airport, which serves Arish, North Sinai, Egypt.


IC

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


א

Modification of Aramaic 𐡀 (ā, ē, “Ālef”), closely related to Syriac ܐ (“Ālap, Olaf”) and Arabic ا (ā ʾ, “alif”), ultimately from Phoenician 𐤀 (“alef”).

(mathematics) ℵ (a transfinite cardinal number)


ADD

(international standards, aviation) IATA airport code for Addis Ababa Bole International Airport, which serves Addis Ababa, Ethiopia.


ADD

(international standards) Unofficial non-ISO 4217 currency code for the Andorran diner.


zg

(metrology) Symbol for zeptogram, an SI unit of mass equal to 10⁻²¹ grams.


yg

(metrology) Symbol for yoctogram, an SI unit of mass equal to 10⁻²⁴ grams.


Gg

(metrology) Symbol for gigagram, an SI unit of mass equal to 10⁹ grams.


μg

(metrology) Symbol for microgram, an SI unit of mass equal to 10⁻⁶ grams.

(physics) Misspelling of µG (“microgauss”).


pg

(metrology) Symbol for picogram, an SI unit of weight equal to 10⁻¹² grams.


Tg

(metrology) Symbol for teragram, an SI unit of mass equal to 10¹² grams.


ppm

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


egy

English <i class="Latn mention" lang="en">Egyptian</i>

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


ale

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


ng

(metrology) Symbol for nanogram, an SI unit of mass equal to 10⁻⁹ grams.

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


apa

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


sai

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


ane

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


nor

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


AU

Ashmore and Cartier Islands
Coral Sea Islands

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


AU

au

IAU recommended unit symbol for astronomical units

ua

BIPM recommended unit symbol for astronomical units


bob

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


zum

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


aus

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


nap

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


dir

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


und

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


dan

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


pap

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


luk

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


puu

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


sinh

(trigonometry) The hyperbolic function hyperbolic sine.


fry

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


π

(mathematics) Pi, an irrational constant representing the ratio of the circumference of a circle to its diameter; approximately 3.14159265.

(UPA) A voiced labial click consonant (IPA [ɡ͜ʘ]).

(phonetics, rare) A voiceless labiodental plosive (p̪).


ua

BIPM recommendation for the unit symbol of astronomical unit

au

IAU recommendation for the unit symbol of astronomical units


Σ

(mathematics) Σ. Sum over a set of like terms:

(topology) suspension or reduced suspension

existential quantifier
existential quantifier

(mathematics) A class (in the arithmetical hierarchy) of formulae whose outermost unbounded quantifiers are existential quantifiers


hoe

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


sad

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


lua

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


PEI

(international standards, historical) ISO 4217 currency code for the former Peruvian inti; a currency used from 1985 to 1991.


av

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


ilo

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


hat

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


Introduced by Gerhard Gentzen who based it on the Latin letter A, by analogy with ∃.

universal quantifier
universal quantifier

(mathematics, logic) The symbol used in predicate calculus, etc, to represent the universal quantifier, meaning “for all”.


cab

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


ani

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


Introduced by Giuseppe Peano in Formulaire de mathematiqués (1897), from the uppercase Latin letter E. The modern variable-binding syntax first appeared in Principia Mathematica (1910).

(mathematics, logic) The existential quantifier, meaning "there exists (at least one)".


che

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


pro

Abbreviation of English Provençal + abbreviation of English old.

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


io

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


zap

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


abt

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


cad

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


lez

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


aah

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


ego

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


por

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


η

quantum field theory
quantum field theory

(mathematics) The metric tensor in quantum field theory.

coefficient of viscosity
coefficient of viscosity

(chemistry, physics) The coefficient of viscosity.

(engineering) Efficiency in engineering.

Sommerfeld parameter
Sommerfeld parameter


ο

The cardinal number 70 in Greek numerals.


ο

The cardinal number 70,000 in Greek numerals.


try

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


jab

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


sa

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


ako

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


mac

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


ira

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


NP

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

(computer science) The class of problems whose solutions can be checked in polynomial time.

Moody's Investors Service
w:Moody's Investors Service

(finance) Short-term bond credit rating by Moody's Investors Service, indicating that the issuer's ability to meet its obligations is less than adequate.


ero

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


fax

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


GBA

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


awn

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


registered trademark
registered trademark

Indicates that the preceding mark (phrase, name, or picture) is a registered trademark or service.


Coordinate term: ℗ (for audio medium)

Copyright on a graphic (written or visual) work.


From English TM, initialism of trademark.

Only ABC Widgets sells the genuine Throbulator™. Accept no imitations!

Each time I call them, they tell me my delivery is arriving Soon™.

OK, I get it, writing in all-caps on the Internet is a Bad Thing™.

So yeah, they’ve reached the Flirting on Dad’s Insta™ phase.

2024 August 20, Mehera Bonner, “Zoë Kravitz and Channing Tatum’s 3-Year Relationship Timeline: a Retrospective”, in Cosmopolitan, archived from the original on 2024-10-07:

I know what you’re thinking: But, wait, it can’t possibly be...? Except it probably is! 2023 was truly the year of the Fever Dream Couple™, from Avril Lavigne and Tyga to Rosalía and Jeremy Allen White. And this year, that tradition continued with pint-sized pop star Sabrina Carpenter and delightfully Irish actor Barry Keoghan.

2024 September 17, “Here’s a Rundown on Sabrina Carpenter and Barry Keoghan’s ‘Ship”, in Cosmopolitan:

(Internet slang, humorous) Indicates irony, sarcasm, disparagement, mock importance, humorous usage, etc.


abo

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


din

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


ko

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


fin

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


lis

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


đ

(NAPA, bowl-struck variant) A voiced dental fricative (IPA [ð])

(Teuthonista) a voiced interdental plosive.


fra

(international standards) ISO 639-2/T & ISO 639-3 language code for French.


sec

trigonometric function
trigonometric function

(trigonometry) Symbol of the trigonometric function secant.

(nonstandard) Symbol of second, an SI unit of measurement of time.


æ

IPA

(IPA) a near-open front unrounded vowel.

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


ett

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


mag

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


ET

magnetic flux density
magnetic flux density

(metrology) Symbol for exatesla, an SI unit of magnetic flux density equal to 10¹⁸ teslas.

exatesla

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

(climatology) Köppen climate classification for a tundra climate.


lo

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


nia

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


ƕ

(IPA, obsolete) a voiceless [w̥] i.e. [ʍ].


ʃ

IPA

Introduced by Isaac Pitman in his 1847 Phonotypic Alphabet, based on the italic form of the long s (ſ).

and straight: a vertical line with a right hook at top and a left hook at bottom. The glyph in the box at right has an intermediate form.

The form varies between curvy: an 's' stretched vertically

(IPA) a voiceless palatoalveolar sibilant.

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

(some Italian dictionaries) voiced alveolar fricative (/z/)


ɮ

IPA

(IPA) a voiced alveolar lateral fricative.

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


ɾ

IPA

A turned small-capital J (turned ᴊ), from the era when printers generally created new phonetic symbols turning metal type of existing letters upside-down. The name in English is "fishhook R".
The Karlgren letter ɿ is unrelated.

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


ɸ

IPA

(superscript ⟨ᶲ⟩, IPA) [ɸ]-fricated release of a plosive (e.g. [pᶲ], sometimes implying an affricate [p͜ɸ]); [ɸ]-coloring; or a weak, fleeting or epenthetic [ɸ]. A "whistled" sibilant in the case of Shona /sᶲ/.


ɱ

IPA

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


ɚ

IPA

(IPA) a rhotic mid central vowel; schwar

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


ɑ

IPA

A Latin form of Greek ⟨α⟩, formed by analogy with manuscript forms of Latin a. In the early years of the IPA, regular Greek ⟨α⟩ was used.

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


ɺ

(superscript ⟨𐞦⟩, IPA) a flapped [ɺ]-release (of a plosive); [ɺ]-coloring; or a weak, fleeting or epenthetic [ɺ].


ʊ

IPA

A distinctive form of a small-capital ᴜ. Often typeset as a turned small-capital omega.

(IPA) a near-close near-back rounded vowel.

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


ʢ

IPA

(IPA) a voiced epiglottal fricative or trill (or trilled fricative).

(superscript ⟨𐞴⟩, IPA) [ʢ]-coloring (that is, epiglottalized), either in general or specifically on a voiced consonant – cf. 𐞖.

(superscript ⟨𐞴⟩, IPA) an [ʢ]-trilled or [ʢ]-fricated release of a plosive (e.g. [ʡ𐞴], sometimes implying an affricate [ʡ͜ʢ]); or a weak, fleeting or epenthetic [ʢ].


ʟ

IPA

(superscript ⟨ᶫ⟩, IPA) [ʟ]-release of a plosive (e.g. [ɡᶫ], sometimes implying an affricate [ɡ͡ʟ̝]); [ʟ]-coloring; or a weak, fleeting or epenthetic [ʟ].

(Boas transcription) a lateral affricate (IPA [t͡ɬ])


ǃ

IPA

The pipe ⟨ǀ⟩ + subscript dot. Despite the visual similarity in most sources, this letter does not derive from the exclamation mark !.

(IPA) the forward release of an alveolar click.

the tenuis velar or sometimes uvular alveolar click, [k͜ǃ] or [q͜ǃ]

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


ɧ

IPA

ʍ

a letter defined specifically for English

(IPA) one variety of the Swedish sj sound, variously interpreted.

Some second language learners have difficulties separating [f] from [ɧᶠ]. […] Thus, there is then no need, at this point, to introduce another IPA symbol [f𐞗].

(superscript ⟨𐞗⟩, IPA, rare) [ɧ]-fricated release of a plosive, [ɧ]-coloring, or a weak, fleeting or epenthetic [ɧ].


ɕ

IPA

(rare)

(IPA) a voiceless alveolo-palatal sibilant

(rare)

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

(phonetics, rare) the IPA affricate [t͡ɕ]


ʍ

IPA

ɧ

a letter defined specifically for Swedish

(IPA, officially prior to 1979) a voiceless labialized velar approximant, IPA⁽ᵏᵉʸ⁾: [w̥]

(IPA, officially since 1979) a voiceless labialized velar fricative, IPA⁽ᵏᵉʸ⁾: [xʷ]

(superscript ⟨ꭩ⟩, IPA) voiceless labialization (such as word-final [xꭩ] in German auch), aspirated labialization (such as ⟨kꭩ⟩ for [kʷʰ]), [ʍ]-fricated release of a plosive, [ʍ]-coloring, or a weak, fleeting or epenthetic [ʍ]


ʑ

IPA

(IPA) a voiced alveolo-palatal sibilant.

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


ʛ

IPA

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


ɹ

IPA

(IPA, superscript ⟨ʴ⟩) [ɹ]-coloring of a vowel, or a weak, fleeting or epenthetic [ɹ].

(dated) specifically, once commonly used to represent rhotic vowels.


ʘ

IPA

(IPA) the forward release of a bilabial click.

the tenuis velar or sometimes uvular bilabial click, [k͜ʘ] or [q͜ʘ]

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


ɦ

IPA

(IPA) a voiced (or more precisely murmured) glottal fricative or approximant.

(superscript ⟨ʱ⟩, IPA) breathy voiced a.k.a. murmured when after a consonant; sometimes a murmured vowel; otherwise a weak, fleeting or epenthetic [ɦ].

(UPA) a voiced laryngeal approximant (IPA [ɦ̞])


ʈ

IPA

(superscript ⟨𐞯⟩, IPA) [ʈ]-onset (prestopping / preocclusion / preplosion), [ʈ]-release, [ʈ]-coloring, or a weak, fleeting or epenthetic [ʈ].


ʎ

IPA

May stand in for palatalized [lʲ].

(superscript ⟨𐞠⟩, IPA) [ʎ]-release of a plosive (e.g. [ɟ𐞠], sometimes implying an affricate [ɟ͜ʎ̝]); [ʎ]-coloring; or a weak, fleeting or epenthetic [ʎ].


ʐ

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 ⟨ᶼ⟩, IPA) [ʐ]-fricated release of a plosive (e.g. [dᶼ] or [ɖᶼ]), sometimes implying an affricate (e.g. ⟨ɖᶼ⟩ for [ɖ͡ʐ]); [ʐ]-coloring; or a weak, fleeting or epenthetic [ʐ].


ɥ

IPA

*The Karlgren letter script y with a straight descender.

(superscript ⟨ᶣ⟩, IPA) labio-palatalization of a consonant ([ɥ]-coloring, that is, simultaneous labialization and palatalization); or a weak, fleeting or epenthetic [ɥ].

(Dania, Swedish dialect alphabet) a vowel, IPA⁽ᵏᵉʸ⁾: [ʏ].

(phonetics) Karlgren's form of the Sinological letter ʮ.


ʜ

IPA

(IPA) a voiceless epiglottal fricative or trill (or trilled fricative).

(superscript ⟨𐞖⟩, IPA) [ʜ]-coloring (that is, epiglottalized), specifically on a voiceless consonant – cf. 𐞴;

(superscript ⟨𐞖⟩, IPA) an [ʜ]-trilled or [ʜ]-fricated release of a plosive (e.g. [ʡ𐞖], sometimes implying an affricate [ʡ͜ʜ]); or a weak, fleeting or epenthetic [ʜ].

(UPA) a voiceless transition between two sounds; i.e., voiceless airflow without any particular articulation.


ʁ

IPA

(superscript ⟨ʶ⟩) [ʁ]-fricated release of a plosive, sometimes implying an affricate; [ʁ]-coloring or a weak, fleeting or epenthetic [ʁ] – see ⟨ʶ⟩.

(IPA) a voiced uvular fricative or approximant.

See also ⟨𐞥⟩.

(Voice Quality Symbols, superscript ⟨ʶ⟩) A uvularized consonant or vowel – see ⟨ʶ⟩.


ɻ

IPA

(superscript ⟨ʵ⟩, IPA) [ɻ ]-coloring, such as a rhotacized vowel ⟨Vʵ⟩; or a weak, fleeting or epenthetic [ɻ ].


ʝ

IPA

(superscript ⟨ᶨ⟩, IPA) [ʝ]-fricated release of a plosive (e.g. [ɟᶨ] or [ɡᶨ]), sometimes implying an affricate (e.g. ⟨ɟᶨ⟩ for [ɟ͡ʝ]); [ʝ]-coloring; or a weak, fleeting or epenthetic [ʝ].


ʏ

IPA

(IPA) a near-close near-front rounded vowel.

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


ʌ

IPA

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

(UPA) A wildcard for any vowel, or for a vowel of uncertain quality.


ave

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


ɶ

IPA

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


ʂ

IPA

(superscript ⟨ᶳ⟩, IPA) [ʂ]-fricated release of a plosive (e.g. [tᶳ] or [ʈᶳ]), sometimes implying an affricate (e.g. ⟨ʈᶳ⟩ for [ʈ͡ʂ]); [ʂ]-coloring; or a weak, fleeting or epenthetic [ʂ].


ʋ

IPA

(superscript ⟨ᶹ⟩, IPA) [ʋ]-coloring, such as a rhotacized vowel ⟨Vᶹ⟩ in some dialects of English; or a weak, fleeting or epenthetic [ʋ].

(superscript ⟨ᶹ⟩, VoQS) labio-dentalized (a type of [ʋ]-coloring), e.g. [sᶹ], [zᶹ] and [ɹᶹ] for some individuals in English.

The voiceless equivalent of ⟨ʋ⟩ was ⟨ꜰ⟩. Both were replaced in 1932.

(IPA, obsolete) a voiced bilabial fricative; superseded by β


ʕ

IPA

(superscript ⟨ˤ⟩) pharyngealization (primarily). See details at ˤ.

(IPA) a voiced pharyngeal fricative or approximant.

Pilaga language
Voiced pharyngeal fricative


ʙ

(superscript ⟨𐞄⟩, IPA) [ʙ]-trilled release of a plosive (e.g. [b𐞄], sometimes implying an affricate [b͜ʙ]); or a weak, fleeting or epenthetic [ʙ].


ʀ

IPA

(superscript ⟨𐞪⟩, IPA) an [ʀ]-trilled release of a plosive (e.g. [ɢ𐞪], sometimes implying an affricate [ɢ͜ʀ]); or a weak, fleeting or epenthetic [ʀ].

ᴀ ʙ ᴄ ᴅ ᴇ ꜰ ɢ ʜ ɪ ᴊ ᴋ ʟ ᴍ ɴ ᴏ ᴘ ꞯ ʀ ꜱ ᴛ ᴜ ᴠ ᴡ ʏ ᴢ

(UPA) a voiceless r sound (a voiceless alveolar trill; IPA [r̥]).


ɴ

IPA

velar dental click ⟨ᶰǀ⟩ (old-style ⟨ᶰʇ⟩),
velar alveolar click ⟨ᶰǃ⟩ (old-style ⟨ᶰʗ⟩),
velar palatal click ⟨ᶰǂ⟩ (old-style ⟨ᶰ𝼋⟩),
velar lateral click ⟨ᶰǁ⟩ (old-style ⟨ᶰʖ⟩),
velar bilabial click ⟨ᶰʘ⟩,
velar retroflex click ⟨ᶰ𝼊⟩ or ad hoc ⟨ᶰ‼⟩ (old-style ⟨ᶰψ⟩).

(on a click consonant) A nasal uvular click; specifically

Placement after the click letter – e.g. ⟨ǂᶰ⟩ – may imply an audible uvular release.

See also ⟨ᵑ⟩, ⟨𐞒⟩, ⟨𐞥⟩.

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

(obsolete, pre-1900 IPA) Used to represent either a palatal nasal [ɲ] or a velar nasal [ŋ], depending on the language.


ɽ

IPA

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


ð

(IPA) a voiced dental fricative or, occasionally, approximant.

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


ʉ

IPA

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


ɣ

IPA

Attic Greek
Voiced velar fricative
voiced velar fricative

A Latin adaptation of the Ancient Greek and Modern Greek letter γ (“gamma”). In Greek, γ in most contexts represents a voiced velar fricative, and has done so since Koine Greek, which is why it was chosen as the IPA letter to represent that sound (in Ancient times, in Attic Greek, γ represented [ɡ], like the English g).

(superscript ⟨ˠ⟩) velarized (that is, [ɣ]-coloring).

(superscript ⟨ˠ⟩) [ɣ]-fricated release or a weak, fleeting or epenthetic [ɣ] – see ˠ.

(doubled ligature) letter in Doke (1925) for a voiced lateral click.

(phonetics, obsolete) letter in Doke (1925) for a voiced dental click.


ɵ

IPA

(IPA) a close-mid central rounded vowel.

(IPA, dated) a rounded mid reduced vowel.

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

(phonetics) a mid rounded reduced vowel.


ʔ

IPA

(superscript ⟨ˀ⟩) glottalization or a weak, fleeting or epenthetic [ʔ] – see ⟨ˀ⟩

(IPA, UPA, NAPA) glottal stop; The symbol itself is referred to as a glottal stop or gelded question mark.


BRB

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


BRB

(international standards, historical) ISO 4217 currency code for the former second Brazilian cruzeiro; a currency used from 1967 to 1986.


ʒ

IPA

Introduced in Isaac Pitman's English Phonotypic Alphabet in 1847 based on the "tailed" medieval cursive form of the letter z.

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

(some Italian dictionaries) voiced alveolar affricate (/dz/)


ʒ

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. […] ℞. medulda caſiæ fiſtulæ newly drawen. ʒ. vj. of diaprunis laxatiue. ʒ. ij. of ſuger roſet [sugar compounded with rose petals] tabulate as much as ſuffiſeth 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:


gru

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


ə

Bavarian language
Mid-central unrounded vowel
ə

IPA

Coined by German philologist Johann Andreas Schmeller in 1821 for his grammar of Bavarian.

coinage

(IPA) a reduced mid-central vowel, undefined for rounding.

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

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


ɔ

(vowel): A turned-c as a convenient type for an open o.
(click): A rotated Xhosa dental click ⟨c⟩. Later identified as a rotated palatal stop [c], analogous to turned dental t ⟨ʇ⟩ for dental clicks and turned velar k ⟨ʞ⟩ for 'velar' clicks.

(IPA, UPA) an open-mid back rounded vowel.

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

(phonetics, obsolete) base letter of the palatal click consonants; equivalent to IPA ⟨ǂ⟩.


su

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


mad

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


ŋ

IPA

Originally a ligature of n_g in mediaeval Icelandic.

velar dental click ⟨ᵑǀ⟩ (old-style ⟨ᵑʇ⟩),
velar alveolar click ⟨ᵑǃ⟩ (old-style ⟨ᵑʗ⟩),
velar palatal click ⟨ᵑǂ⟩ (old-style ⟨ᵑ𝼋⟩),
velar lateral click ⟨ᵑǁ⟩ (old-style ⟨ᵑʖ⟩),
velar bilabial click ⟨ᵑʘ⟩,
velar retroflex click ⟨ᵑ𝼊⟩ or ad hoc ⟨ᵑ‼⟩ (old-style ⟨ᵑψ⟩).

(on a click consonant) A nasal velar as opposed to nasal uvular click; specifically

Placement after the click letter – e.g. ⟨ǂᵑ⟩ – may imply an audible velar release.

See also ⟨ᶰ⟩, ⟨ᶢ⟩, ⟨ᵏ⟩.

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


zho

(international standards) ISO 639-2/T & ISO 639-3 language code for Chinese.


yap

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


dzo

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


fur

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


pal

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


ay

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


Im

Im(a + bi) = b

(mathematics) Symbol for the imaginary part of a complex number.


val

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


°C

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).


(chess notation) Indicator of an interesting move, but one that may not be optimal.