marco

From Portuguese and Spanish marco, from Medieval Latin marcus, of Germanic origin, from Frankish *mark, from Proto-Germanic *marką (“mark, sign”), from Proto-Indo-European *marǵ- (“land boundary”). Compare Middle High German marc (“half-pound”), which likely influenced the Romance development. See also Old English marc, Old Norse mǫrk.

der

(historical) A traditional Spanish and Portuguese unit of mass, usually equivalent to 230 g and particularly used for trade in gold and silver.


palma

From Portuguese and Spanish palma. Doublet of palm, palmo, and pam.

(historical) Alternative form of palmo, traditional Portuguese and Spanish units of length.


micrometer

/maɪˈkɹɑmɪtəɹ/

[maɪˈkɹɑmɪɾɚ]

A device used to measure distance very precisely but within a limited range, especially depth, thickness, and diameter.


micrometer

[ˈmaɪkɹoʊˌmiːɾɚ]


bahar

From Egyptian Arabic بهار (bahār) or other dialects, Arabic بُهَار (buhār).

30 bahars of ivory

bahars of nutmeg

(historical) A weight used in the 18th and 19th century in the Middle East and the East Indies, of no single standard but rather of varying sizes sometimes termed little bahars and great bahars.


costal

From French costal, from Medieval Latin costālis, from Latin costa (“rib”). As a Spanish unit, via Spanish costal. Doublet of coastal.

(historical) Synonym of saco, a historical Spanish unit of dry measure, equivalent to about 111 L


cumec

A measure of the rate of flow of fluid, especially through a pipeline, equal to one cubic metre per second (m³/s).


crith

Borrowed from Ancient Greek κριθή (krithḗ, “barley corn, a small weight”).

bor

standard temperature and pressure
standard temperature and pressure

(physics) the weight of 1 litre of hydrogen at standard temperature and pressure. Equal to approximately 0.09 grams.


drachm

Borrowed into late Middle English from Old French dragme (modern French drachme), from Late Latin dragma. Doublet of dirham.

(units of measurement) A small unit of weight, variously:

One sixteenth (1⁄16) of an ounce avoirdupois (1.77 g; symbol: ℨ or ʒ).

(pharmacy) One eighth (1⁄8) of an ounce apothecary (3.89 g; symbol: ℨ or ʒ).

units of measurement; pharmacy; pharmacy

At Aleppo, and its port Scanderoon, the cantaro contains 100 rottoli, each of which is subdivided into 12 ounces, or 720 drachms... The rottolo with which the silks from Tripoli, and other parts of Syria, are weighed, consists of 700 drachms, answering to 4⅞ avoirdupois. The rottolo used in weighing the Persian silks contains 680 drachms, or nearly 4¾ lbs. avoirdupois. The rottolo of Damascus, with which brass, camphor, benzoin, spikenard, balsam of Mecca, and other drugs are weighed, contains 600 drachms, or 4¹⁄₅ lbs. avoirdupois. Five rottoli, or 3600 drachms, make what is called a vesno... At Saide, in Syria, (the ancient Sidon,) silk and sattin yarn are weighed with the rottolo of Damascus, of 600 drachms; 100 such rottoli answering to about 410 lbs. avoirdupois... At Smyrna, the cantaro, or kintal, contains 45 okes, or 100 rottoli. The batman is 6 okes, or 2400 drachms; and the oke is 400 drachms, and the rottolo = 180 drachms. The cantaro of 45 okes weighs 123 lbs. 4 oz. avoirdupois; and, therefore, the oke is = 2 lbs. 11 oz. 13 drs. avoirdupois. At Tripoli, the cantaro weight contains 100 rottoli, each of 6 ounces, or 128 termini; this cantaro answers to 168 lbs. peso sotile of Venice, or about 12 lbs. avoirdupois...

1819, Abraham Rees, The Cyclopaedia, Vol. XXX, s.v. "Rottolo"

(historical, obsolete) Alternative form of dirhem: a small former Turkish weight (variously 1.5–3.5 g).

dirhem

(historical, obsolete) Alternative form of drachma: a small former Greek weight (about 4.3 g).

drachma

(obsolete, numismatics) Alternative form of drachma: a Greek silver coin weighing one drachma.


parasang

From Latin parasanga, from Ancient Greek παρασάγγης (parasángēs), from unattested Old Persian *frasanhva- (indigenously attested only in Middle Iranian onwards); compare Middle Persian [script needed] (frasang /plsng/, “frasang (4 Roman miles)”) (whence Persian فرسنگ (farsang)). Doublet of farsang.

cog

To see so much difference betwixt words and deeds, so many parasangs betwixt tongue and heart […].

We were told that we still had to drive six or sixty parasang.

2013, Lucy Renner Jones, translating Annemarie Schwarzenbach, Death in Persia, Seagull Books 2013, p. 44

A historical Iranian unit of itinerant distance used throughout the Western Mediterranean and the Middle East in antiquity, originally the distance travelled in one hour, and generally assumed to be equivalent to about six kilometres.


nanoliter

Alternative spelling of nanolitre One billionth of a liter; 10⁻⁹ of a liter. Symbol: nl.


microliter

No thanks, I'm ok. I've had approximately 270 μL too much.

Alternative spelling of microlitre One millionth (10⁻⁶) of a liter. Symbol µl.


kiloliter

Alternative spelling of kilolitre One thousand liters.


megaliter

Alternative spelling of megalitre One million liters.


quarta

From Portuguese quarta, from Latin quartus (“fourth”), q.v., in reference to the units making up one-fourth of the alqueire (“Portuguese bushel”) or arrantel (“Portuguese pound”). Doublet of quart, quater, and cuaderon.

(historical) A traditional Portuguese unit of dry measure, equal to 3.2–4.8 L in different 19th-century contexts.


maasha

A traditional unit of weight in South Asia, usually about a gram and variably equivalent to a tenth or a twelfth of a tola; in modern use, standardised to 0.972 grams and a twelfth of a tola.

(historical) A coin in South Asia weighing one maasha, variably equivalent to a tenth or a twelfth of a rupee.


8 ball

The 8 ball was buried behind the 10 and the 15.

(literally, billiards) The eighth numbered ball.

A cocktail made with vodka and V8 vegetable juice.

(slang) An eighth of an ounce, especially as a drug quantity.

(slang) A 40 ounce bottle of malt liquor

(slang) The alliance of the Folks and Crips (two gangs).


dessiatina

en-noun

dessiatina (plural dessiatinas or dessiatiny)

dessiatinas (plural)
dessiatiny (plural)

From Russian десяти́на (desjatína, “tenth, tithe”).

der

The tract of land given by the emperor contains five hundred and forty-five acres, (twenty dessjatines,) being two thousand two hundred and five feet long, and one thousand five hundred and eighty-two wide at its greatest breadth.

1849 July, “The Observatory at Pulkowa”, in The North American Review, volume 69, number 144:

I go shooting there every year, and it is worth five hundred roubles a desyatina cash down, and he is paying you two hundred on long term.

1918, Leo Tolstoy, translated by Aylmer and Louise Maude, Anna Karenina, Oxford, published 1998, page 166:

Clouds, some in very clear profile, black and jagged, sail in armadas towards the Asian arctic, above the sweeping dessiatinas of grasses […]

1973, Thomas Pynchon, Gravity's Rainbow:

The average peasant allotment, at 2.6 dessyatiny in 1900, was comparable in size to the typical smallholding in France or Germany.

1996, Orlando Figes, A People's Tragedy, Folio Society, published 2013, page 119:

A Russian measure of land, roughly 1.1 hectares.


dunam

From Hebrew דּוּנָם (dunam) or Arabic دُونُم (dūnum), from Turkish dönüm, from dönmek (“to turn”). A probable calque of Byzantine Greek στρέμμα (strémma, “stremma”, literally “that which is turned”).

You pay eight marks and they plant a dunam of land for you with olives, oranges, almonds or citrons.

1922 February, James Joyce, Ulysses, Paris: Shakespeare and Company, […], →OCLC:

(historical) An Ottoman Turkish unit of surface area nominally equal to 1,600 square (Turkish) paces but actually varied at a provincial and local level according to land quality to accommodate its colloquial sense of the amount of land able to be plowed in a day, roughly equivalent to the Byzantine stremma or English acre.

A modern Turkish unit of surface area equal to a decare (1000 m²), equivalent to the modern Greek stremma.

Various other units in other areas of the former Ottoman Empire, usually equated to the decare but sometimes varying (as in Iraq, where it is 2500 m²).


cha

One–two–cha–cha–cha
Three–four–cha–cha–cha

(dance) Used to count out steps, particularly involving the hip-shaking sections of rhythmic Latin dances


tchetvert

Borrowed from Russian че́тверть (čétvertʹ, “quarter”). Doublet of cwierc.

bor+

(historical) An obsolete Russian unit of volume.


cubic foot

A measure of volume or capacity equivalent to that of a cube having unit dimension of one foot; equals 28.32 litres.


mired

A unit of measurement for color temperature.


carrus

Borrowed from Latin carrus. Doublet of car.

(uncommon, historical) A load: various English units of weight or volume based upon standardized cartloads of certain commodities.


oka

From Italian oca, from French oque, from Ottoman Turkish اوقه (okka). Doublet of ounce, inch, uncia, ouguiya, and awqiyyah.

doublet

At Constantinople, the cantaro, or quintal, contains 44 okes, or 100 rottoli; and the cantaro weighs about 123¾ lbs. avoirdupois, the oke 2lbs. 13 oz., and the rottolo 19⁴⁄₅ oz., and the chequee 11¼ oz. avoirdupois... At Smyrna, the cantaro, or kintal, contains 45 okes, or 100 rottoli. The batman is 6 okes, or 2400 drachms; and the oke is 400 drachms, and the rottolo = 180 drachms. The cantaro of 45 okes weighs 123 lbs. 4 oz. avoirdupois; and, therefore, the oke is = 2 lbs. 11 oz. 13 drs. avoirdupois...

1819, Abraham Rees, The Cyclopaedia, volume XXX, Rottolo, page 632:

Dram (49·5 grains), 100=chequi, 4=oka (2·8286 ℔); dram (49·5 grains), 180=rotl, 100=kintal or kantar (127·29 ℔).

1888, W.M.F. Petrie, Encyclopaedia Britannica, 9th ed., Vol. XXIV, s.v. "Weights and Measures"

(historical) A former Turkish, Egyptian, Hungarian, and Romanian unit of weight, usually of a little more than a kilogram.


faraday

From Michael Faraday, English chemist and physicist.

gram equivalent weight
gram equivalent weight

(chemistry, physics) The quantity of electricity required to deposit or liberate 1 gram equivalent weight of a substance during electrolysis; approximately −96,487 coulombs.


dirham

From Arabic دِرْهَم (dirham), ultimately from Ancient Greek δραχμή (drakhmḗ). Doublet of dram, drachma, diram, dirhem, and adarme.

United Arab Emirates
United Arab Emirates

A unit of currency used in the Arab world, currently the name of the currency of Morocco and the United Arab Emirates.


braza

From Spanish braza (“Spanish brace”), from Old Spanish braça, from Latin brachia, variant of bracchium (“arm, cubit”), from Ancient Greek βραχίων (brakhíōn, “upper arm”).

der

(historical) Synonym of estado, a traditional Spanish unit of length equivalent to about 1.67 m.


decalitre

From French décalitre, equivalent to deca- + litre.


dol

Clipping of Latin dolor (“sorrow, pain”). Doublet of dolor.

(medicine) The unit of measurement for pain.


stilb

Coined by the French physicist André Blondel around 1920, from Ancient Greek στίλβω (stílbō, “I glitter”).

(physics) a unit of luminance equal to one candela per square centimetre


cordel

From Spanish cordel (“surveying rope, 50 varas”), from Catalan cordell (“cord, string”), from Vulgar Latin *cordellus (“little rope”), from Latin chorda (“rope, cord”) + -ellus (“-elle: forming diminutives”). Equivalent to cord + -el.

bor

(historical) Spanish chain, a traditional Spanish and Mexican unit of distance equivalent to about 41.9 m.


arroba

From Spanish and Portuguese arroba, from Old Spanish arroua and Old Galician-Portuguese arrova, from Andalusian Arabic and Arabic اَلرُّبْع (ar-rubʕ, “one-fourth”) in reference to its making up one fourth of a quintal.

der

(historical) A traditional Spanish unit of mass, varying by time, location, and substance but generally around 11.5 kilograms.

(historical) A traditional Portuguese unit of mass, usually equivalent to 14.7 kilograms.

arroba

traditional Spanish and Portuguese unit of mass

(historical) A traditional Spanish unit of liquid measure, varying by time, location, and substance but generally around 15 liters.


psig

Pounds per square inch, gauge (unit of pressure)


verst

Borrowed from Russian верста́ (verstá), partly through German Werst and French verste.

|The hill Pulkowa, twelve miles (seventeen wersts) south of Admiralty Palace in St. Petersburg, […]

1849, "The Observatory at Pulkowa" The North American Review Volume 0069 Issue 144 (July 1849)

Her particular part of the country was a few hundred versts the other side of Tamboff, with some fifteen miles of agrarian disturbance between her and the nearest neighbour.

1910, Saki [pseudonym; Hector Hugh Munro], “Reginald in Russia”, in Reginald in Russia and Other Sketches, London: Methuen & Co. […], →OCLC, page 6:

‘Is it much further, Michael?’ she asked the clerk, to dispel the thoughts that frightened her. ‘They say it's seven versts from this village.’

1918, Aylmer and Louise Maude, translated by Leo Tolstoy, Anna Karenina, Oxford, published 1998, page 604:

You have to tramp three or four versts to get to the exhibition of war loot, past Fabergé eggs and the Impressionists.

A Russian unit of length, equivalent to about 1.07 kilometres or about ²⁄₃ of a mile.


millimolar

(chemistry, of a solution) Having a concentration of one thousandth of a mole per litre


mol

(chemistry, physics, dated) Alternative spelling of mole


ponto

From Portuguese ponto (“point”), Old Galician-Portuguese ponto, from Latin punctum, from pungō (“to prick, to puncture”). Doublet of punto and puncto.

(historical, measure) A traditional short Portuguese unit of length usually about equal to 0.2 mm.


palmo

From Spanish and Portuguese palmo (“handspan”), from Latin palmus. Doublet of palm, palma, and pam.

(historical, measure) A traditional Spanish unit of length, equivalent to about 20.8 cm.


kenning

From ken (“to beget, bring forth”), from Middle English kennen (“to beget, conceive (offspring); to give birth to”), from Old English cennan, gecennan (“to beget (offspring); to give birth to; to bring forth, produce”); see further at etymology 1.

inh

The ſtreine or kenning of the egge.

1585, “Oui vmbilicus”, in Iohn Higins, transl., The Nomenclator, or Remembrancer of Adrianus Iunius, London: Ralph Newberie and Henrie Denham, page 54:

(zoology, obsolete, rare) A chalaza or tread of an egg (a spiral band attaching the yolk of the egg to the eggshell); a cicatricula.


kenning

A learned borrowing from Old Norse kenning, from kenna (“to know; to perceive”), from Proto-Germanic *kannijaną (“to make known”); see further at etymology 1. Compare can, keen, ken.

der

[A]s we are all aware, the Skalds used all sorts of kennings from Jewels, Gold, Silver, &c., to betoken Women, &c. Gold is called "The Sea's Blink (Blik)", and so on, and a female is "Gold's Mistress", "The Goddess of the Golden Jewel", and so forth.

1867–1868, George Stephens, “Bracteates”, in The Old-Northern Runic Monuments of Scandinavia and England, Now First Collected and Deciphered, volume II, London: John Russell Smith; Copenhagen: Michaelsen and Tillge; printed by H. H. Thiele, →OCLC, pages 509–510:

I venture to say that a close study of the style of Piers Plowman would thoroughly dispose of alliteration as chief factor in the kenning-process.

1887 January, Francis B. Gummere, “Wilhelm Bode: Die Kenningar in der angelsächsen Dichtung. Mit Ausblicken auf andere Litteraturen. Darmstadt und Leipzig, 1886. [Strasburg Dissertation].”, in A. Marshall Elliott, editor, Modern Language Notes, volume II, number 1, Baltimore, Md.: [Johns Hopkins Press], →ISSN, →OCLC, column 36:

If we now move to the second helmingr, Kock tries to unscramble the two kenningar[…], but this is over-zealous, since there are ample parallels for such braiding of kenning elements. Finnbogi interprets the kenning 'ǫrbeiðanda bǫðvar jǫkla' contextually, to mean 'the one who provoked the warrior into drawing his sword' (Orkneyinga saga, 202).

2006, Viking and Medieval Scandinavia, Turnhout, Antwerp, Belgium: Brepols, →OCLC, page 149:

The original also makes frequent use of the circumlocutory type of poetic expression known as the kenning, which consists (in its simplest form) of a base-word (always a noun, sometimes the second of the two elements in a compound word) accompanied by a determinant (either a noun in the genitive or, in the case of a compound-word kenning, the first of the compound's two elements).

2007, Andrew Wawn with Graham Johnson and John Walter, editors, Constructing Nations, Reconstructing Myth: Essays in Honour of T. A. Shippey (Making in the Middle Ages; 9), Turnhout, Antwerp, Belgium: Brepols, →ISBN, page 172:

(poetry) A metaphorical compound or phrase, used especially in Germanic poetry (Old English or Old Norse) whereby a simple thing is described in an allusive way.

kenning

metaphorical phrase used in Germanic poetry


kenning

unknown

Origin unknown

In the hall. One large table, with frame. 10s. ij cobbordes 8s. j fourme, j chaire, and j kenninge measure, 12d.

1585–1586 January 18, “LXIII. Testamentum Johannis Ogle. [63. Will of John Ogle.]”, in [William Greenwell], editor, Wills and Inventories from the Registry at Durham. Part II (The Publications of the Surtees Society; XXXVIII), Durham: Published for the Society by George Andrews, Durham; London: Whittaker and Co., 13 Ave Maria Lane; T. and W. Boone, 29 New Bond Street; Edinburgh: Blackwood and Sons, published 1860, →OCLC, page 132:

He called one day at Mr. Hepple's, of Needless Hall, in a forlorn condition, seeking his seed (a present of corn given at seed-time). […] After this conversation, Mr. Hepple served him with a kenning of oats, which was a much greater quantity than he usually gave on such occasions.

1828, chapter XXX, in E. Mackenzie, editor, compiled by James Thompson, A New, Improved, and Authentic Life of James Allan, the Celebrated Northumberland Piper; Detailing His Surprising Adventures in Various Parts of Europe, Asia, and Africa, including a Complete Description of the Manners and Customs of the Gipsy Tribes. Collected from Sources of Genuine Authority, by James Thompson, with Explanatory Notes by E. Mackenzie, …, Newcastle upon Tyne: Printed and published by Mackenzie and Dent, St. Nicholas' Church-yard [...], →OCLC, page 460:

(Northern England) A dry measure equivalent to half a bushel; a container with that capacity.


saeculum

Strauss-Howe generational theory
Strauss-Howe generational theory

An approximately 85 year cycle in Strauss-Howe generational theory, a highly controversial sociological theory that postulates that zeitgeist and popular cultural values exist along recurring cycles.


square centimeter

en-noun

square centimeter (plural square centimeters)

(American spelling) A unit of area equal to that of a square of sides 1 centimeter.


teaspoonful

teaspoonful (plural teaspoonfuls or teaspoonsful)

teaspoonfuls (plural)
teaspoonsful (plural)

“When I say mind,” said the blood relation, “I refer to the quarter-teaspoonful of brain which you might possibly find in her head if you sank an artesian well.”

1960, P[elham] G[renville] Wodehouse, chapter XVII, in Jeeves in the Offing, London: Herbert Jenkins, →OCLC:

A unit of capacity equal to the amount a teaspoon can hold which is taken approximately as 5 ml.


grao

From Portuguese grão (“grain”), from Old Galician-Portuguese grão, from Latin grānum. Doublet of corn, grain, gram, and granum.

doublet

(historical) A traditional short Portuguese unit of length, equivalent to about 4.6 mm.

(historical) A traditional short Portuguese unit of mass, equivalent to about 50 mg.


stade

From Latin stadium, from Ancient Greek στάδιον (stádion), a 600-foot racetrack, a distance of 600 Greek feet. Cognate with French stade. Doublet of stadium, stadion, and estadio.

(historical) Synonym of stadion: a former Greek unit of distance (variously 150–210 m at different places and times).

stadion

(dated) A track for footraces and its surrounding stadium.


stade

From Spanish estado, from Latin status (“standing”), in reference to it being roughly the height of a grown man. Doublet of estate, state, status, and estado.

(historical) A unit of length notionally based on the height of a grown man, equivalent to a fathom.

(units of measure, obsolete) Synonym of estadio: a traditional Spanish unit of measure equivalent to about 1.67 m.


gigahertz

en-noun

gigahertz (plural gigahertz or gigahertzes)


middie

(Australia) A measure of 285 ml (10 fl oz) of beer; a pot.


wythe

Uncertain.
* Perhaps an alteration of width.
* Perhaps related to withe (“flexible twig; band of twigs”), from Old English wiþþe (“tie, band”).
The chimney-partition sense may derive from the fact that a single wythe or thickness of brick has often been used for such partitions.

A chimney runs from the base of the first flue liner to the top of the last flue liner, or to any rain cap above it. Attach single-wythe chimneys to the house.

1986, Jack Payne Jones, Handbook of Construction Contracting: Plans, specs, building, Craftsman Book Company, →ISBN, page 373:

[…] Where there is more than one flue, there is usually a single wythe of masonry separating the flues. Particularly on older chimneys with poor or missing caps, this wythe of brick dividing the flues may be[…]

2003, Carson Dunlop, Principles of Home Inspection: Chimneys & wood heating, Dearborn Real Estate, →ISBN, page 30:

(architecture) A partition between flues in a chimney.


plethron

(historical units of measure) A former Greek unit of length equal to 100 Greek feet (podes).


pous

From Ancient Greek πούς (poús, “foot”). Doublet of foot, pes, and pie (“Spanish unit of length”).

doublet

δάκτυλοι δάκτυλοι

στάδια στάδια

The Greek foot, a unit of length based on the shod foot, generally equal to 16 fingers (δάκτυλοι) or ¹⁄₆₀₀ stade (στάδια) but varying over time and location within Greece and the Hellenized world.


stadion

From Ancient Greek στάδιον (stádion). Doublet of stade, stadium, and estadio.

The stadion did not suffice for the races of horses and chariots which had been favorites with the Greeks since the Trojan war.

1883: Franz von Reber (translated by Joseph Thacher Clarke), History of ancient art, p257 (S. Low…)

The stadion was used specifically for human athletic contests whereas the Greek hippodrome and later the Roman circus were used for equestrian events. The gymnasion and the palaistra were used for training purposes for human athletic events.

1993: David Gilman Romano, Athletics and Mathematics in Archaic Corinth: The Origins of the Greek Stadion, page 1 (Diane Publishing Co.; →ISBN (10) (13))

Stadion Race (200 meters) […] The winner of the Stadion race could justifiably be called the fastest man in the Greek world. According to legend, Herakles, whose feet were 0·32 meters (12·7 inches) long, stepped-off the Stadion at Olympia. Since he chose a distance of 600 “feet”, this made the race at Olympia 192 meters. Herakles staged a race for his brothers, the Kouretes, and crowned the victor with a branch of wild olive. Although the Greek Stadion race was always 600 feet, other Greek gods had “feet” of different lengths. This caused the length of the Stadion race to vary slightly from stadium to stadium. This list of Olympic victors compiled by Hippias in about 400 B.C. lists the Stadion race as the only event in the first 13 Olympic games. Coreobus of Elis, a cook, was the victor in the Stadion race in 776 B.C. and thus the first recorded Olympic victor.

2001, Edward Seldon Sears, Running Through the Ages, McFarland & Company, →ISBN, page 26:

Major Lacius, together with his soldiers, met the group in a place about two stadions from the court.

2011, Ali Kemal Senan, Phaselis, →ISBN, page 510:

(historical) A Greek unit of distance based on standardized footraces, equivalent to about 185.4 metres.

ста́дий

A unit of length roughly equal to 1/8 mile — see also furlong


chupa

From Philippine Spanish chupa, probably from Malay cupak.

(Philippines, historical) A unit of volume equivalent to around 375 mL.


manpower

Canals dug entirely by manpower.

The power exerted by a single person (analogous to horsepower.)


pycnometer

From Ancient Greek πυκνός (puknós, “dense”) and μέτρον (métron, “measure”). By surface analysis, pycno- + -meter.

As Galileo showed in his tract La Bilancetta, or “The Little Balance,” a scientist of Archimedes’ stature could have achieved a far more precise result using his own law of buoyancy and an accurate scale, something far more common in the ancient world than a very precise pycnometer, which is used to measure displacement.

2006 December 8, David Biello, “Fact or Fiction?: Archimedes Coined the Term ‘Eureka!’ in the Bath”, in Scientific American:

specific gravity
specific gravity#English

(physics, metrology) A vessel of precisely known volume used by weighing to determine the specific gravity or relative density of a liquid.

pycnomètre

vessel used to determine a liquid’s specific gravity


centigramme

/ˈsɛntɪˌɡɹæm/


kilohertz

en-noun

kilohertz (plural kilohertz or kilohertzes)

A unit of frequency equal to one thousand cycles per second; one thousand hertz


cavan

From Spanish caván, from Tagalog kaban as "Manila cavan", via Cebuano as the "provincial cavan".

A unit of dry capacity equivalent to one and a half times or twice the Manila cavan.


picometre

(metrology) An SI unit of length equal to 10⁻¹² metres. Symbol: pm


megawatt

One million (1 000 000) watts, abbreviated as MW.


lambert

From Lambert; Named for Johann Heinrich Lambert (1728–1777), a Swiss mathematician, physicist and astronomer.

(physics, astronomy) a cgs unit of luminance; the brightness of a surface that emits one lumen per square centimetre

en:Johann Heinrich Lambert
en:Lambert (unit)


man-year

One person's working time for a year, or the equivalent, used as a measure of how much work or labor is required or consumed to perform some task.


man-month

Experience seems to indicate that developing such a TeX interface for a new output device takes on the order of one man-month.

1980, Richard S. Palais, “Message from the Chairman”, in TUGboat, volume 1, number 1, page 5:

One person's working time for a month, or the equivalent, used as a measure of how much work or labor is required or consumed to perform some task.


daraf

The capacitance of the three in parallel is 3 farad; thus the elastance of the three is reduced to ¹⁄₃ daraf.

1974, H. Arthur Klein, The Science of Measurement: A Historical Survey, →ISBN, page 467:


picoamp

One million millionth (10⁻¹²) of an ampere. Symbol: pA.


picovolt

One million millionth (10⁻¹²) of a volt, abbreviated as pV.


nanoamp

One thousand millionth (10⁻⁹) of an ampere. Symbol: nA.


nanovolt

electromotive force
electromotive force#English

(metrology) An SI unit of electromotive force equal to 10⁻⁹ volts. Symbol: nV


milliamp

One thousandth (10⁻³) of an ampere. Symbol: mA.


milliwatt

One thousandth (10⁻³) of a watt, abbreviated as mW.


microwatt

One millionth (10⁻⁶) of a watt, abbreviated as μW.


gigawatt

One thousand million (10⁹) watts, abbreviated as GW.


base unit

The SI unit of velocity is metres per second, derived from the base units metre and second.

A unit of measurement which is not itself defined in terms of other units, and from which other units may be derived.

perusyksikkö

a unit of measurement on which others are based


megajoule

(metrology) An SI unit of energy equal to 10⁶ joules. Symbol: MJ


kiloamp

One thousand ( 10³ ) amperes. Symbol: kA or KA.


mega amp

One million ( 10⁶ ) amperes. Symbol: MA.


gigamp

One thousand million (10⁹) amperes. Symbol: GA.


nano-amp

electrical current
electrical current#English

(metrology) An SI unit of electrical current equal to 10⁻⁹ amperes. Symbol: nA


kilo-amp

One thousand (10³) amperes. Symbol: kA or KA.


kilo-volt

One thousand ( 10³ ) volts. Symbol: kV or KV.


tera amp

One million million (10¹²) amperes. Symbol: TA.


tera-amp

One million million ( 10¹² ) amperes. Symbol: TA.


nano-volt

electrical potential
electrical potential#English

(metrology) An SI unit of electrical potential equal to 10⁻⁹ volts. Symbol: nV


picojoule

One million millionth ( 10⁻¹² ) of a joule. Symbol: pJ.


kilo-watt

One thousand (10³) watts. Symbol: kW or KW.


giga-joule

One thousand million ( 10⁹ ) joules. Symbol: GJ.


tera-joule

One million million (10¹²) joules. Symbol: TJ.


nanojoule

(metrology) An SI unit of work or energy equal to 10⁻⁹ joules. Symbol: nJ


nano-joule

(metrology) An SI unit of energy, work and heat equal to 10⁻⁹ joules. Symbol: nJ


millifarad

One thousandth (10⁻³) of a farad. Symbol: mF.


pico-joule

One million millionth (10⁻¹²) of a joule. Symbol: pJ.


kilo-joule

One thousand (10³) joules. Symbol: kJ or KJ.


pico-farad

One million millionth (10⁻¹²) of a farad. Symbol: pF.


nano-farad

(metrology) An SI unit of electrical capacitance equal to 10⁻⁹ farads. Symbol: nF


tera-ohm

One million million (10¹²) ohms. Symbol: TΩ.


millijoule

One thousandth (10⁻³) of a joule. Symbol: mJ.


giga-volt

One thousand million ( 10⁹ ) volts. Symbol: GV.


giga-ohm

One thousand million (10⁹) ohms. Symbol: GΩ.


picofarad

pikofarad

one million millionth (10E-12) of a farad


nano-ohm

electrical resistance
electrical resistance#English

(metrology) An SI unit of electrical resistance equal to 10⁻⁹ ohms. Symbol: nΩ


pico-ohm

One million millionth ( 10⁻¹² ) of a ohm. Symbol: pΩ.


nanofarad

(rare) (metrology) An SI unit of electrical capacitance equal to 10⁻⁹ farads. Symbol: nF


cubic yard

A unit of volumetric measurement equivalent to a cube one yard in each dimension.


terajoule

(metrology) An SI unit of energy equal to 10¹² joules. Symbol: TJ


microlitre

A unit of fluid measure being one millionth (10⁻⁶) of a litre. Symbol: μl


kilojoule

(metrology) An SI unit of energy equal to 10³ joules. Symbol: kJ


dessertspoon

A unit of measure, being equivalent to two teaspoons or two-thirds of a tablespoon, or approximately 10 millilitres; a dessertspoonful.


kantar

From Arabic قِنْطَار (qinṭār). Doublet of centenary and quintal.

a unit of weight used in Eastern Mediterranean countries, varying from place to place (44.93 kg in Egypt)


grano

From Spanish grano (“grain, 1/9216 Spanish pound”), from Latin grānus (“grain”), ultimately from Proto-Indo-European *ǵr̥h₂nóm. Doublet of grain.

bor

(historical) A traditional Spanish unit of mass, equivalent to about 50 mg.


Winchester quart

en-noun

Winchester quart (plural Winchester quarts)

(British) a unit of volume equal to half a Winchester gallon, equal to two quarts, or 2.273 litres.


sverdrup

From Norwegian Sverdrup. After Harald Sverdrup (1888–1957), Norwegian oceanographer and meteorologist.

(metrology, oceanography) A unit of measure of volume transport, used in oceanography, equal to 1 million cubic metres per second. Symbol: Sv


cyathus

From Latin cyathus, from Ancient Greek κύαθος (kúathos, “ladle”), of uncertain origin. Doublet of kyathos.

(historical) A Roman unit of liquid measure reckoned as the volume of 1⅔ Roman ounce of wine and equivalent to about 45 mL although differing slightly over time.


tertian

From Middle English tertiān, terciān, terciāne (adjective and noun), originally often as part of the collocation fever cum terciane, after Latin febris cum tertiānā. Compare the "third" essence of tertiary.

The puncheon, an old wine cask, whose volume was one-third of a tun's.


tph

Transport for London is working to increase capacity on the East London line stretch of London Overground. Work is underway to increase frequencies from the current 16 trains per hour (tph) to 18tph, with new funding now announced to further improve this to 20tph in the future.

2019 September 5, “Funding for 20tph East London line service”, in Modern Railways, archived from the original on 2019-10-08:

Alternative letter-case form of TPH (“trains per hour”)


Welsh yard

A calque of Welsh llath (“rod”), similarly distinguished within Welsh as the llath Gymreig (“Welsh rod”).

(historical) The llath, a former Welsh unit of length equal to about 40 inches (about 1 m).


buttload

From butt + load. Butt in this context may be possibly one or both of:
* butt (“large wooden cask”) (Etymology 3)
* butt (“two-wheeled cart”) (Etymology 5)
Alternatively, the term may either be a corruption of English boatload or have been influenced by that term (except for the specific, West Country dialect sense).

assload and cartload ()

amount carried by a donkey or any large, unspecified amount; amount carried by a cart or any large, unspecified amount

pipe

of wine or beer, is 126 gallons or one butt

BUTT LOAD: about six seams.

1796, William Marshall, “Provincialisms of West Devonshire”, in The Rural Economy of the West of England, volume 1, page 324:

The farmers near the fishing towns in the same district [Cornwall] likewise buy the refuse of bruised and small pilchards, which are rejected as unfit for curing or the market, and are called caff, four cart-loads of twelve bushels each being considered as the quantity proper for an acre. […] The butt-load formerly cost about 9s. or 10s. but they now fetch 15s. or 20s. the load.

1819, Abraham Rees, The Cyclopaedia, volume 31, Salting:

The different kinds of manure usually employed in this neighbourhood are sea-weed, sand, stable-dung, ashes, and fish-dung. The quantities vary so much according to the condition of the land and other circumstances that it is impossible to state with any degree of accuracy what quantity is applied to the acre. In one of the conditions of leases previously quoted, it is stipulated that 10 butt-loads of good town or fish dung, and 10 butt-loads of sea-sand (to be mixed with the necessary quantity of earth) shall be carried for every acre broken up for tillage.

1839 July 5, Richard Edmonds, “A Statistical Account of the Parish of Madron, containing the Borough of Penzance, in Cornwall”, in Quarterly Journal of the Statistical Society of London, volume 2, page 211:

(obsolete, UK, West Country) A regional English measure of capacity of a heavy cart (a butt), containing 6 seams, or 48 bushels, equivalent to 384 gallons.


centiliter

From French centilitre; equivalent to centi- + liter.

(American spelling) Alternative form of centilitre


centilitre

From French centilitre; equivalent to centi- + litre.

(British spelling) A unit of volume or capacity of one hundredth of a litre. Symbol: cl


man-hour

Coordinate term: machine-hour

Ten workers for two days—that's 160 man-hours.

[...] every man has tools and amenities always within one minute's walk; thus non-productive man-hours are kept to a minimum.

1960 December, “New G.E. Line diesel loco maintenance depot at Stratford”, in Trains Illustrated, page 766:

Since 1950 our agricultural output per man-hour has actually doubled!

1962 January 11, John F. Kennedy, Second State of the Union Address:

The amount of work that can be done by one person in an hour.


long ton

Distinguishing this measure from the "short ton" of 2000 pounds.

(chiefly historical) A traditional unit of mass equal to 20 hundredweights of 112 pounds avoirdupois each, equivalent to approximately 1016 kilograms.

長噸

ton of 20 hundredweights of 112 pounds each


measurement ton

measurement ton (plural measurement tons)

A unit of volume for cargo freight usually reckoned at 40 U.S. or Imperial cubic feet.


cartload

From Middle English cartlode, cartelode, equivalent to cart + load.

Two days of skirmishing outside the town were followed by a bold sortie headed by a dervish; and, as the result of this affair, a cartload of heads was sent as trophies to Constantinople.

1854 Francis Rawdon Chesney - The Russo-Turkish Campaigns of 1828 and 1829

The youngster put some cartloads of food into his bag and set out again.

1886, Peter Christen Asbjørnsen, translated by H.L. Brækstad, Folk and Fairy Tales, page 101:

. . . although a little apt to get buried under a cartload of written pleadings, . . .

1850, Edward Everett, The Mount Vernon Papers:

(historical, specifically) A load: various English units of weight or volume based upon standardized cartloads of certain commodities.


petameter

(US) (metrology) An SI unit of length equal to 10¹⁵ meters; alternative spelling of petametre.


available seat-mile

available seat-mile (plural available seat-miles)

(aviation) A measure of an airline flight's passenger carrying capacity, equal to the number of seats onboard an aircraft multiplied by the distance flown in miles. Seats that are not available for sale to revenue-paying passengers (e.g., seats reserved for crew rest, etc.) are excluded from this calculation.


petawatt

(metrology) An SI unit of power equal to 10¹⁵ watts. Symbol: PW


berkovets

From Russian бе́рковец (bérkovec); derived from бе́рковеск (bérkovesk), Old East Slavic бьрковьскъ (bĭrkovĭskŭ, “of Birka”), ultimately Old Norse Birka, a port city in mediaeval Sweden.

der

(historical) An old Russian unit of weight, approximately 164 kilograms or 10 poods.


megaohm

(metrology) An SI unit of resistance equal to 10⁶ ohms. Symbol: MΩ


dime bag

A small bag containing ten dollars worth (usually one gram) of marijuana. This may refer to the unit of measurement or the bag itself.


stere

From French stère, from Ancient Greek στερεός (stereós, “solid”), because the unit was used for solid commodities such as firewood.

It will be observed, that in this system it is only necessary to remember the metre, are, litre, and stere, all the others having certain relations to these, being equal to them taken 10, 100, 1000, &c. times, […]

1814, Peter Barlow, A New Mathematical and Philosophical Dictionary:

(obsolete) A measure of volume used e.g. for cut wood, equal to one cubic metre.

motti

measure of volume for cut wood equalling one cu-m


legua

From Spanish legua (“Spanish league”) and Portuguese légua (“Portuguese league”), from Late Latin leuga and leuca (“Gaulish league, distance of one hour's walking”), from Gaulish, from Proto-Celtic *lougā.

(historical) Spanish league, a traditional Spanish unit of distance equivalent to about 4.2 km.


periot

(obsolete) A unit of weight, 9,600 of which make a grain.


centistoke

(physics) Misconstruction of centistokes (unit of kinematic viscosity)


copino

From Spanish copino, from copa (“cup”) + -ino (“-ine: forming diminutives”).

(historical) Synonym of medio, a traditional unit of dry measure equivalent to about 2.3 L


carga

From Spanish carga (“a load, 4 Spanish bushels”), from cargar (“to load”), from Late Latin carricāre, from Latin carrus (“cart”). Doublet of charge and cargo.

bor

(historical) A traditional Spanish unit of dry measure, equivalent to about 222 liters.


milla

From Spanish milla (“Spanish mile”), from Latin mīlia (“Roman mile”), plural of mīlle (“1000”) in reference to its composition of 1000 Roman paces. Doublet of mile and milha.

(historical) Spanish mile, a traditional Spanish unit of distance equivalent to about 1.4 km.


saco

From Spanish saco (“a sack, a half-carga”), from Old Spanish saco, from Latin saccus, from Ancient Greek σάκκος (sákkos, “sack, sackcloth”), from Semitic. Doublet of sac, saccus, sack, and sakkos.

doublet

(historical) A traditional Spanish unit of dry measure, equivalent to about 111 L.


pingo

From Greenlandic pingu or Inuktitut pingu (“hummock, small hill”).

The greatest variation in cover thickness, as determined from collapsed pingos, is in irregularly shaped pingos, or those with asymmetrically located ice-cores.

1963, J[ohn] Ross Mackay, The Mackenzie Delta Area, N.W.T. (Memoir (Geographical Branch, Department of Mines and Technical Surveys, Canada); 8), Ottawa, Ont.: Department of Mines and Technical Surveys, →OCLC, page 74:

Considerable progress has been made on the discovery and mapping of many open system pingos in central Alaska and Yukon Territory[…], as well as the discovery of pingo-like mounds in the shallow waters of the Beaufort Sea north of the mouth of the Mackenzie River. The greatest advance in pingo research in the last decade has been a consideration and understanding of theory and rate of pingo growth […]

1973, Roger J. E. Brown, Troy L. Péwé, “Distribution of Permafrost in North America and Its Relationship to the Environment: A Review, 1963–1973: 13–28 July 1973, Yakutsk, U.S.S.R.”, in Permafrost: North American Contribution: Second International Conference, Washington, D.C.: National Academy of Sciences, →ISBN, page 80, column 2:

With the exception of small pingos, most pingo ice cores have several ice types. The bulk of the core can be segregated ice, intrusive ice formed from the freezing of bulk water, or any combination of the two types. In addition, dilation-crack ice (tension-crack ice, Brown and Kupsch, 1974) is commonly the main ice type beneath the summit of pingos with craters.

1983, J[ohn] Ross Mackay, “Oxygen Isotope Variations in Permafrost, Tuktoyaktuk Peninsula Area, Northwest Territories”, in Current Research Part B = Recherches en Cours Partie B (Geological Survey Paper; 83-1B), Ottawa, Ont.: Geological Survey of Canada, →ISBN, page 68:

Larger scale frost-heave features, such as pingoes, are rare because there is insufficient water available, generally, for the growth of large ice bodies.

1987, I. B. Campbell, G. G. C. Claridge, Antarctica: Soils, Weathering Processes and Environment (Developments in Soil Science; 16), Amsterdam, New York, N.Y.: Elsevier, →ISBN, page 106:

(geomorphology) A conical mound of earth with an ice core caused by permafrost uplift, particularly if lasting more than a year.


yottalitre

A unit of volume equivalent to 10²⁴ litres, symbol Yl.


teralitre

A unit of volume equivalent to 10¹² litres. Symbol TL


exalitre

A unit of volume equivalent to 10¹⁸ litres. Symbol: El


hectoliter

From French hectolitre, equivalent to hecto- + liter.


petalitre

A unit of volume equivalent to 10¹⁵ litres. Symbol: Pl


megalitre

A unit of volume equivalent to 1,000,000 litres. Symbol: Ml or ML


kilolitre

A unit of volume equivalent to 1000 litres, and equal to one cubic metre. Symbol: kl


gigalitre

A unit of volume equivalent to 10⁹ litres (one billion [British billion] liters). Symbol: Gl


nanolitre

A unit of volume equivalent to 10⁻⁹ litres. Symbol: nl


hectolitre

A unit of volume or capacity equivalent to 100 litres. Symbol: hL


estadio

From Portuguese estádio, from Latin stadium (“stadium, Roman stade”), from Ancient Greek στάδιον (stádion, “stadium for footraces, stadion”). Doublet of stade, stadium, and stadion.

der

(historical) A traditional Portuguese unit of distance, variously equivalent to about 185.2, 231.5, or 257.2 m depending on the number of leagues per equatorial degree.


mithqal

From Persian or Urdu مثقال (mesqâl), and their source, Arabic مِثْقَال (miṯqāl, “weight, unit of weight”), from ثَقَلَ (ṯaqala, “to weigh”). Doublet of metical

bor

The Wazir brought him and the King said, "Give him a thousand miskals of gold from the treasury, and load him ten camels with goods for trade, and send him under escort to his own town."

1885–1888, Richard F[rancis] Burton, transl. and editor, “Night 13”, in A Plain and Literal Translation of the Arabian Nights’ Entertainments, now Entituled The Book of the Thousand Nights and a Night […], Shammar edition, volume (please specify the volume), [London]: […] Burton Club […], →OCLC:

A unit of weight in the Islamic world, usually taken as equivalent to 4.25 grams, used especially to weigh precious metals.


Amsterdam pound

en-noun

Amsterdam pound (plural Amsterdam pounds)

Calque of Dutch Amsterdams pond, from Amsterdam + pond (“pound (weight measure)”).

compound

(obsolete) One of many locally defined weight measures called pound before the introduction of the metric system, important because of its use in the thriving Dutch maritime commerce; equivalent to 0.4941 kilograms.


esca

From Galician escá, from Hispanic Late Latin scala (“bowl”) attested in Isidore of Seville, probably from Suevic, from Proto-Germanic *skēlō (“bowl”). Cognate with German Schale and Dutch schaal.

(historical) A traditional Galician unit of dry measure, equivalent to about 6–9 L depending on the substance measured.


characters per inch

Please use a type that is 10 characters per inch.

(design, typography) A unit of measurement of the number of typographic characters that fit on a one inch line of printed type. This unit is mainly used to specify font sizes that have the same width for each character (monospaced), however it may also be used to give an average for fonts with characters of varying widths.

(electronic media) A unit of measurement of the number of characters per inch ("linear packing density") when storing data on certain types of magnetic media or tape, used to measure storage density that the encoding medium possesses.


pulgada

From Spanish pulgada, from Vulgar Latin *pollicata, from Latin pollicaris (“of or related to a thumb”), from pollex (“thumb”) + -āris (“-ary: forming adjectives”). Doublet of polegada.

der

(historical) A traditional Spanish unit of length, equivalent to about 2.3 cm


cubic inch

A unit of volume equal to that of a cube with each edge one inch long.


milliarcsecond

(metrology) A unit of angle equal to one thousandth of an arcsecond (used especially in astronomy)


dry measure

The peck and the bushel are commonly used imperial dry measures

A unit of volume used in measuring dry commodities (e.g. grain or fruit).

kuivan aineen mitta

Unit of capacity for measuring dry commodities

măsură de capacitate (for prăfoase produse)


terametre

(metrology) An SI unit of length equal to 10¹² metres. Symbol: Tm


attometre

(metrology) An SI unit of length equal to 10⁻¹⁸ metres. Symbol: am


yoctometre

(metrology) An SI unit of length equal to 10⁻²⁴ metres. Symbol: ym


zettametre

The largest known galaxy, at the centre of the Abell 2029 cluster in Virgo, has a diameter of around 53 zettametres.

1994, New Scientist - Volume 144, Issues 1951-1958, page 81:

As one of my reviewers (SP Gray) puts it: '...I think that Andromeda will be a good deal closer to the Solar System than it is now, before we read of its distance in zettametres'

2015 August, Keith Atkin, “Time to ditch non-SI units in physics teaching?”, in Physics Education, volume 50, number 5:

How many kiloparsecs are there in a zettametre (10²¹ m)?

2018, Margreth Tadie, Robert Pott, Neill Goosen, Petrie Van Wyk, Karin Elizabeth Wolff, “Expanding 1st year problem-solving skills through unit conversions and estimations”, in IEEE Global Engineering Education Conference (EDUCON):


picometer

(US) (metrology) An SI unit of length equal to 10⁻¹² meters; alternative spelling of picometre.


sazhen

From Russian саже́нь／са́жень (sažénʹ).

bor

саже́нь//са́жень

Russian саже́нь／са́жень (sažénʹ)

For how if he were to end by getting drowned? True, the river’s normal level lay four sazheni down—the remembrance of that (for he had often descended thither to draw water) comforted him for a moment; […]

1929, Ivan Nazhivin, translated by C[harles] J[ames] Hogarth, Rasputin (Continental Fiction), volume 1, New York, N.Y.; London: Alfred A[braham] Knopf, page 169:

Although in his diary he listed its intended dimensions as 200 by 100 sazheni (1400 x 700 ft.), the resulting structure probably measured only 818.75 x 425.75 feet (230 x 130m).

1978, David R. Jones, editor, The Military-Naval Encyclopedia of Russia and the Soviet Union, volume 3, Academic International Press, →ISBN, page 75:

1995: And it will not yield more than ten sazhens of wood to the desyatina…and he is paying me at the rate of two hundred roubles. — Leo Tolstoy, Anna Karenina, tr. Louise & Aylmer Maude (Oxford 1998, p. 166)

In 1883, peasant representatives from two villages in Voronezh Province petitioned the governor, detailing their hardships. In 1863 they had chosen to receive gratuitous allotments that amounted to a minuscule 2,080 sazheni (86.7 percent of one desiatina) per soul; since then, however, population growth had reduced their allotment size by more than one-half, to eight hundred sazheni per soul.

2024, Peter Kolchin, Emancipation: The Abolition and Aftermath of American Slavery and Russian Serfdom, New Haven, Conn.: Yale University Press, →ISBN:

A unit of length formerly used in Russia, equal to seven feet (just over two meters).


Winchester measure

en-noun

Winchester measure (countable and uncountable, plural Winchester measures)

Units used for the measurement of dry and liquid volumes, the standards for which were originally deposited at Winchester, England. The Winchester bushel is still used in the US.


Winchester bushel

Winchester bushel (plural Winchester bushels)

A measure of dry and liquid volume equal to 35.24 litres used in US and Canada. Originating in England and one of the units of Winchester measure. Abbreviated bu


nanoampere

(metrology) An SI unit of electrical current equal to 10⁻⁹ amperes. Symbol: nA


maund

From Hindi मन (man) / Urdu من (man), and their source, Persian من, ultimately from Arabic [Term?]. The -d is probably from assimilation with Etymology 1 above, or from comparison with pound.

Now the rail has come, and the fire-carriage says buz-buz-buz, and a hundred lakhs of maunds slide across that big bridge.

1888, Rudyard Kipling, “In Flood Time”, in In Black and White, Folio Society, published 2005, page 410:

One mann or maund is approximately 37.32 kilograms.

2023, Radhika Iyengar, Fire on the Ganges, Fourth Estate, page 146:

A unit of weight in south and west Asia, whose value varies widely by location.


tonelada

From Portuguese and Spanish tonelada, from tonel (“tun”) + -ada (“-ful”), from Old French tonel (“little tun, cask”), from tone + -el (“-elle: forming diminutives”), from Late Latin tunna (“tun”), from Proto-Celtic *tunna (“hide, skin”).

(historical) A traditional Spanish unit of mass, equivalent to about 920 kg.


lugeon

(geology) A unit of measurement of permeability, equal to one foot per year.


yoctometer

Sheldon Cooper: My hair is growing at the rate of 4.6 yoctometers per femtosecond.

2012, Mark Cendrowski, The Big Bang Theory, Season 5, Episode 18, "The Werewolf Transformation"


zettameter

On the other extreme, our galaxy (we call it the Milky Way) is about 0.9 Zm (Zettameters, 100 million trillion meters) in diameter.

2015, Claude Phipps, No Wonder You Wonder!: Great Inventions and Scientific Mysteries, →ISBN:

What is the speed of light in Zm (zettameters) per second?

2016, Richard N. Aufmann, Joanne Lockwood, Richard D. Nation, Mathematical Excursions, →ISBN, page 364:

The size scale for the nuclear chemistry laboratory ranges from zeptometers (10⁻²¹ m) to zettameters (10²¹ m).

2017, Walter D. Loveland, David J. Morrissey, Glenn T. Seaborg, Modern Nuclear Chemistry, →ISBN, page 2:


femtoampere

A billionth of a millionth (10⁻¹⁵) of an ampere. Symbol: fA


picoampere

(metrology) An SI unit of current equal to 10⁻¹² amperes. Symbol: pA


centiampere

electric current
electric current#English

(metrology) An SI unit of electric current equal to 10⁻² amperes. Symbol: cA


quintale

Alternative form of quintal, particularly in Italian contexts.


tex

A milligram per meter, a unit of linear mass density for thread or fiber.


hectowatt-hour

(physics) A measure of energy, one hundred watt-hours, or one-tenth of a UK "unit" of electricity.


acre foot

(US, engineering, agriculture) A unit of measure, used for volumes of water, equal to one acre times one foot (that is, to the amount of water required to cover one acre of land to a depth of one foot), which is 43,560 cubic feet, 325,851 gallons, 1,233 cubic meters.


cwt.

Short for centum weight, from Latin centum + weight.


deciampere

(metrology) An SI unit of electrical current equal to 10⁻¹ amperes. Symbol: dA


yoctoampere

However, in the IGZO-FET, heavy holes strongly suppress tunneling current, and at most yoctoampere off-state current is estimated which is dominated by thermally excited holes.

2012, Masakazu Murakami, Kiyoshi Kato, Ko Inada, Takanori Matsuzaki, Yasuyuki Takahashi, Shunpei Yamazaki, “Theoretical examination on a significantly low off-state current of a transistor using crystalline In-Ga-Zn-oxide”, in 19th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD):

First, they are known to show an off-state current on the order of yoctoampere per micron (10⁻²⁴ A/µm) at room temperature (RT).

2016, Yoshinobu Asami, Motomu Kurata, Yutaka Okazaki, Eiji Higa, Daisuke Matsubayashi, Satoru Okamoto, Shinya Sasagawa, Tomoaki Moriwaka, Tetsuya Kakehata, Yuto Yakubo, “Properties of c-axis-aligned crystalline indium–gallium–zinc oxide field-effect transistors fabricated through a tapered-trench gate process”, in The Japan Society of Applied Physics, volume 55, number 4S:

For example, the off-state current per micrometer of the channel width at 85° C. is less than or equal to 100 yA (1 yA (yoctoampere) is 1×10⁻²⁴ A).

2018, Jun Koyama, Semiconductor device including refresh circuit for memory cell (UA Patent 9,922,692):

(metrology) An SI unit of electrical current equal to 10⁻²⁴ amperes. Symbol: yA


avoirdupois ounce

avoirdupois ounce (plural avoirdupois ounces)

A unit of weight in the avoirdupois system of units, equal to one sixteenth of a avoirdupois pound.


avoirdupois pound

avoirdupois pound (plural avoirdupois pounds)

A unit of weight in the avoirdupois system of weights, defined as 0.45359237 kg in most of the English-speaking world since 1959.


linha

From Portuguese linha (“line”), from Old Galician-Portuguese linha, from Latin līnea (“thread, line”), from līnum (“flax”), from Proto-Indo-European *līno- (“flax”).

(historical, measure) A traditional short Portuguese unit of length, usually about equal to 2.3 mm.


API unit

From API (“American Petroleum Institute”).

The radioactivity of a typical shale is 100 API units.

(oil industry) A unit of radioactivity used for measuring natural gamma rays in the ground.


API gravity

API gravity (countable and uncountable, plural API gravities)

(oil industry) A specific gravity scale measuring the relative density of various petroleum liquids, expressed in degrees.

grau API

density of petroleum liquid relative to water


decagramme

(British spelling) Alternative spelling of decagram


hectoamp

(metrology) An SI unit of electrical current equal to 10² amps. Symbol: h


hectoampere

(metrology) An SI unit of electrical current equal to 10² amperes. Symbol: hA


deciamp

(metrology) An SI unit of electrical current equal to 10⁻¹ amps. Symbol: d


kilogray

ionizing radiation
ionizing radiation#English

(metrology) An SI unit of absorbed energy from ionizing radiation equal to 10³ grays. Symbol: k


gigabarrel

A unit of volume equal to a thousand million barrels.


millier

From French millier (“a thousand, a 1000ish, 1000 kg”), from mille (“thousand”) + -ier (“-er”).

bor

(archaic, rare) Synonym of metric ton, 1000 kg.


nanomole

(metrology) An SI unit of amount of substance equal to 10⁻⁹ moles. Symbol: nmol


onça

From Portuguese onça, from Latin uncia (“unit, ¹⁄₁₂ pound”), ultimately from Proto-Indo-European *óynos (“one”).

(historical) A traditional Portuguese unit of mass, usually equivalent to 28.7 g.


darcy

From the surname of the French scientist Henry Darcy.

A (non SI) unit of permeability used in measuring the permeability of porous mediums such as sand.


TEU

Treaty on European Union
w:Treaty on European Union


microarcsecond

A unit of angle; one millionth (10⁻⁶) of an arcsecond.

mikrokaarisekunti

a unit of angle; one millionth (10−6) of an arcsecond


attoampere

(metrology) An SI unit of electric current equal to 10⁻¹⁸ amperes. Symbol: aA


momme

A unit of weight (3.75 grams) used for pearls, paper, and silk.


tega

From Galician tega, variant of earlier talega, from Andalusian Arabic تَعْلِيقَة (taʕlíqa, “hanging thing”).

der

(historical) Synonym of ferrado, a traditional Galician unit of dry measure, mass, and land area


coto

From Spanish coto (“half-span, quarter-cubit”), supposedly a variant of codo (“Spanish cubit”), from Vulgar Latin forms of Latin cubitum (“elbow, Roman cubit”), but more probably a development of or influenced by Latin quārtus (“a fourth”) from its use as a fourth of the cubit or Latin quattuor (“four”) from its approximation of the span across four fingers.

bor

(historical) A traditional Spanish unit of length, equivalent to about 10.4 cm.


board foot

A board one square foot by one inch, about 2.36 liters.


acre-foot

A unit of volume equal to an acre times a foot, equal to 43,560 cubic feet, or about 1233.5 cubic meters.


US survey foot

A unit of length equal to ¹²⁰⁰⁄₃₉₃₇ of a meter, used in some states for measuring land.


man-day

One person's working time for a day, or the equivalent, used as a measure of how much work or labor is required or consumed to perform some task.


gsm

Initialism of grams per square metre (unit for measuring the weight of paper)


linea

From Latin līnea (“line, thread”), via Spanish línea in reference to the unit of length, from līnum (“flax”). Doublet of line.

(historical) A traditional Spanish unit of length, equivalent to about 1.9 mm.


petahertz

(metrology) An SI unit of frequency equal to 10¹⁵ hertz.


zettahertz

(metrology) An SI unit of frequency equal to 10²¹ hertz.


cuarta

From Spanish cuarta (“fourth”). Doublet of quart, quarter, and cuarto, &c.

(historical) A traditional Galician unit of dry measure, a quarter-ferrado equivalent to about 3–4.5 L depending on the substance measured.


viss

Borrowed from Tamil வீசை (vīcai) and/or Telugu వీసె (vīse).

(Myanmar) A Burmese unit of measure for weight, approximately 1.63293 kilograms (3.6 pounds).

ပိဿာ

Burmese unit of weight, approximately 1.63293 kg


polegada

From Portuguese polegada (“inch”), from Vulgar Latin *pollicāta, from Latin pollicāris (“of or related to a thumb”), from pollex (“thumb”) + -āris (“-ary: forming adjectives”).

der

(historical, measure) A traditional Portuguese unit of length, usually about equal to 2.8 cm.


exanewton

(metrology) An SI unit of force equal to 10¹⁸ newtons.


onza

From Spanish onza (“ounce, Spanish ounce”), from Latin ū̆ncia. Doublet of a, one, inch, uncia, onça, oka, ouguiya, and awqiyyah.

doublet

(historical) A traditional Spanish unit of mass, equivalent to about 28.76 g.


microtesla

magnetic flux density
magnetic flux density#English

(metrology) An SI unit of magnetic flux density equal to 10⁻⁶ teslas. Symbol: μT


hectobecquerel

(metrology) An SI unit of radiation equal to 10² becquerels. Symbol: h


picosiemens

electrical conductance
electrical conductance

(metrology) An SI unit of electrical conductance equal to 10⁻¹² siemens.


petabecquerel

(metrology) An SI unit of radioactivity equal to 10¹⁵ becquerels. Symbol: P


attohertz

(metrology) An SI unit of frequency equal to 10⁻¹⁸ hertz.


yoctokatal

catalytic activity
catalytic activity#English

(metrology) An SI unit of catalytic activity equal to 10⁻²⁴ katals. Symbol: y


exakatal

(metrology) An SI unit of catalytic activity equal to 10¹⁸ katals. Symbol: E


decikatal

(metrology) An SI unit of catalytic activity equal to 10⁻¹ katals. Symbol: d


kilokatal

(metrology) An SI unit of catalytic activity equal to 10³ katals. Symbol: k


gigakatal

(metrology) An SI unit of catalytic activity equal to 10⁹ katals. Symbol: G


decakatal

(metrology) An SI unit of catalytic activity equal to 10¹ katals. Symbol: da


hectokatal

(metrology) An SI unit of catalytic activity equal to 10² katals. Symbol: h


centikatal

(metrology) An SI unit of catalytic activity equal to 10⁻² katals. Symbol: c


picokatal

(metrology) An SI unit of catalytic activity equal to 10⁻¹² katals. Symbol: p


attokatal

(metrology) An SI unit of catalytic activity equal to 10⁻¹⁸ katals. Symbol: a


microkatal

(metrology) An SI unit of catalytic activity equal to 10⁻⁶ katals. Symbol: μ


femtokatal

(metrology) An SI unit of catalytic activity equal to 10⁻¹⁵ katals. Symbol: f


nanokatal

(metrology) An SI unit of catalytic activity equal to 10⁻⁹ katals. Symbol: n


millikatal

(metrology) An SI unit of catalytic activity equal to 10⁻³ katals. Symbol: m


microkelvin

thermodynamic temperature
thermodynamic temperature#English

(metrology) An SI unit of thermodynamic temperature equal to 10⁻⁶ kelvins. Symbol: μK


milha

From Portuguese milha (“Portuguese mile”), from Latin mīlia (“Roman mile”), plural of mīlle (“thousand”) from its length of 1000 Roman paces, from Proto-Indo-European *(sm̥-)ǵʰéslo-. Doublet of mile and milla.

(historical) A traditional Portuguese unit of distance, equivalent to about 1481.5, 1851.9, or 2057.6 m depending on the league used.


megapascal

(metrology) An SI unit of pressure equal to 10⁶ pascals. Symbol: MPa


grav

A starship thundered invisibly close overhead, its gravs at full lift-off power.

The orbot was a speck, a clot, a ball, a toy. It was gliding silently in on gravs, directly overhead.

1992, Gardner Dozois, Geodesic Dreams: The Best Short Fiction Of Gardner Dozois, →ISBN, page 83:

Air cars include any vehicle which are grav powered and are capable of flying, but unlike aeroplanes they handle similar to normal ground cars.

2008, Martin Rait, FSpace Roleplaying Conspiracy Convention Skills Guide v1.1, →ISBN, page 7:

I set things up for the grav sled support and the Averonian operation.

2011, R Richard, Second Chance King of Avuls, →ISBN, page 7:

With the gravs, I can land in ten seconds and be cutting a door for you at the same time.

2011, J. E. Murphy, Sanctuary, →ISBN, page 317:

(science fiction) An anti-gravity device.


hectopascal

(metrology) An SI unit of pressure equal to 10² pascals. Symbol: hPa


femtofarad

electrical capacitance
electrical capacitance#English

(metrology) An SI unit of electrical capacitance equal to 10⁻¹⁵ farads. Symbol: fF


femtobel

(metrology) An SI unit of relative power equal to 10⁻¹⁵ bels. Symbol: f


femtocoulomb

(metrology) An SI unit of electric charge equal to 10⁻¹⁵ coulombs. Symbol: f


femtojoule

energy, work, and heat
energy, work, and heat#English

(metrology) An SI unit of energy, work, and heat equal to 10⁻¹⁵ joules. Symbol: fJ


femtobecquerel

radioactive activity
radioactive activity#English

(metrology) An SI unit of radioactive activity equal to 10⁻¹⁵ becquerels. Symbol: f


femtocandela

luminous intensity
luminous intensity#English

(metrology) An SI unit of luminous intensity equal to 10⁻¹⁵ candelas. Symbol: fcd


megahenry

(metrology) An SI unit of electrical inductance equal to 10⁶ henrys. Symbol: M


teralumen

(metrology) An SI unit of luminous flux equal to 10¹² lumens. Symbol: T


zeptoliter

(metrology) An SI unit of volume equal to 10⁻²¹ liters. Symbol: z


fmole

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


kiloparsec

(astronomy) A unit of distance equal to one thousand parsecs.


piconewton

(metrology) An SI unit of force equal to 10⁻¹² newtons. Symbol: pN


tolbot

(obsolete, dialectal) A measure of capacity, possibly a bushel.


cotyle

en-noun

cotyle (plural cotyles or cotylae or cotylai)

cotyles (plural)
cotylae (plural)
cotylai (plural)

From Latin cotylē and Ancient Greek κοτύλη (kotúlē, “cup, half-pint”). Doublet of kotyle and kotylos.

der

Again, they give the patient a cotyle of hulwort, clary seed, or caper root with half a drachm of squill; or an acetabulum of germander or thyme in three cyathi of oxymel; or two cotylae of alexanders seed with three cyathi of wine; or a cotyle of fennel seed and libanotis (Latin rosmarinum, ‘rosemary’) mixed with wine; or a drachm of gum ammoniac with three cyathi of oxymel.

1950, Caelius Aurelianus, translated by Israel Edward Drabkin, On Acute Diseases and On Chronic Diseases, University of Chicago Press, page 749:

(historical) Synonym of hemina (“a unit of Roman liquid measure”)


picomole

(chemistry, physics) A unit of substance equal to one trillionth (10⁻¹²) of a mole


microinch

A unit of measurement, the length of one one-millionth of an inch, equivalent to 25.4 nanometers. Symbol: µin


teraelectron volt

en-noun

teraelectron volt (plural teraelectron volts)

10¹² electron volts, as a unit of energy (TeV).


attolitre

(metrology) An SI unit of fluid measure equal to 10⁻¹⁸ litres; alternative spelling of attoliter.


attoliter

(US) (metrology) An SI unit of fluid measure equal to 10⁻¹⁸ liters; alternative spelling of attolitre.


maneh

An obsolete Middle Eastern unit of weight, the mina.


uA

Derived from the similarity between the letter u and the Greek letter µ.


fanega

From Spanish fanega, from Andalusian Arabic فَنِيقَة (faníqa, “sack”), from Arabic فَنِيقَة (fanīqa).

der

(historical) A traditional Spanish unit of dry measure, chiefly used for grain and roughly equivalent to a bushel.

cuartillo (1⁄120 Galician fanega or 1⁄48 Castilian fanega)


petajoule

(metrology) An SI unit of energy equal to 10¹⁵ joules. Symbol: PJ


micromole

(metrology) An SI unit of amount of substance equal to 10⁻⁶ moles. Symbol: μmol


weights and measures

The science and regulation of standards for the quantification of size, weight, temperature, etc.


centner

Probably from Low German, cp. German Zentner, comparable to the hundredweight.

A nonstandard metric unit of weight equal to 100 kilograms, commonly used as an agricultural measure in Eastern Bloc countries (similar to a bushel).

Zentner

Germany: 50 kg, Austria, Switzerland: 100 kg


koku

A unit of measure in feudal Japan, the amount of rice needed to feed one person for a year.


koku

Borrowed from Malay koku, clipping of kokurikulum (“cocurriculum”).

clipping

(Malaysia, school slang) cocurriculum; extracurriculum


lingula

From Latin lingula (“tonguelet, small unit of volume”), from lingua (“tongue”) + -ula (“-ule: forming diminutives”).

bor

(historical) A Roman unit of liquid measure reckoned as the volume of 5/12 Roman ounce of wine, equivalent to about 11 mL.

congius (144 lingulas) urna (1152 lingulas)


congius

From Latin congius, from Ancient Greek κογχίον (konkhíon), from κόγχη (kónkhē) and κόγχος (kónkhos, “mussel shell”) + -ίον (-íon, “-y: forming diminutives”).

(historical) A Roman unit of mass instituted by Vespasian equivalent to about 3.3 kg, the weight of a congius of water.


petaliter

(US) A unit of volume equivalent to 10¹⁵ liters. Symbol: Pl


yoctoliter

(metrology) An SI unit of volume equal to 10⁻²⁴ liters. Symbol: y


yoctolitre

(metrology) An SI unit of volume equal to 10⁻²⁴ litres. Symbol: y


twip

Abbreviation of twentieth of a point (referring to a printer's point).

(computing) A unit of measure equal to one twentieth of a point.


dots per inch

My printer prints at 300 dots per inch.

(graphic design, typography) The measure of a number of pixels per inch used in a graphic or supported by a digital display device, used to specify type or image resolution.


arshin

From Russian арши́н (aršín), from Ottoman Turkish آرشون / آرشین (arşın) (Turkish arşın).

آرشون / آرشین

An obsolete Russian length unit, equal to 71.12 centimeters, or 28 inches.


beka

From Hebrew בֶּקַע (beqáʿ, “half-sheqel”, literally “broken”).

an ancient Biblical unit of weight, half a shekel


attojoule

(metrology) An SI unit of energy, work, and heat equal to 10⁻¹⁸ joules. Symbol: aJ


Jupiter mass

(astronomy) A unit of mass equal to the mass of the planet Jupiter, used to express the mass of other planets. 1 M_J = 2 × 10²⁷ kg.


ganta

From Spanish ganta, from Cebuano gantang, from Malay gantang. Doublet of gantang.

(Philippines, historical) A unit of volume equivalent to eight chupas.


shaftment

From Middle English schaftmonde, from Old English sċeaftmund (“a palm, a palm's length”), equivalent to shaft + mound (“hand”).

inh

An obsolete unit of length defined as 6 inches, which equals 2 palms or ²⁄₃ span; today 6 inches equals exactly 15.24 cm. (Before the 12th century, a shaftment was defined as 6+¹⁄₂ inches.)


ochdamh

Borrowed from Scottish Gaelic ochdamh (“eighth”), from Old Irish ochtmad, from Proto-Celtic *oxtūmetos.

(Scotland, historical) An obsolete Scots unit equal to ¹⁄₈ daugh, notionally comprising 50 Scottish acres.


utilon

However, you have to realize that you should measure the costs and payoffs in utilons, not in dollars. $1 is almost infinitesimally small (in utilons), while $1M payoff is huge - it is perfectly rational to buy the ticket.

2011 November 13, Radovan Garabík, “In support of Keith”, in rec.arts.sf.fandom (Usenet), message-ID <j9o6m2$4kf$1@speranza.aioe.org>:

A trader or trading firm having zero wealth, I've already said, should be considered infinitely bad. So therefore assign -∞ utilons to zero wealth. Conversely, infinite wealth should probably have infinity utilons, though large numbers might behave oddly.

2019 June 18, Agustin Lebron, The Laws of Trading: A Trader's Guide to Better Decision-Making for Everyone, Hoboken, New Jersey: John Wiley & Sons, →ISBN, page 63:

(economics) A hypothetical unit measuring satisfaction.


truti

At every moment of time — i.e., in every Truti — there are millions of Trutis — perfect organisms — in space. This may require some explanation. The units of time and space are the same — a Truti. Take any one Truti of time. It is well known […]

1897, Rāma Prasāda, The Science of Breath and the Philosophy of the Tattvas, page 80:

The Surya-Siddhanta (1.10-21) differentiates kala (time) primarily in two forms (i) murtakala (real time) and (ii) umurtakula (unreal time), taking prdna (4 seconds) and truti (atom) as the smallest units respectively, whereas Bhaskara II in his […]

1988, Kapila Vatsyayan, Bettina Bäumer, Kalātattvakośa: A Lexicon of Fundamental Concepts of the Indian Arts, Motilal Banarsidass Publishe, →ISBN, page 219:

(2 1-3),, we have 1 atom (truti ?) of time =6 paramanukalas (atom times) But from table (2.1-7), we have 1 truti =18 paramanukalas (atoms times), and 1 trasarenu =6 paramankalas (atoms times) Therefore it appears that an atom (truti ?) of time […]

(Hinduism) A unit of time equal to about 30 microseconds.


square kilometre

en-noun

square kilometre (plural square kilometres)

Located at the southern end of the exercise area, Wuqiu Dao consists of two islets - Daqiucun [Dachiu-tsun^([sic – meaning Tachiu-tsun])] and Xiaoqiucun [Hsiaochiu-tsun] with each covering approximately one square km.

[1996 March 21 [1996 March 18], Jixiong (0149 2623 7160) He, “There Is a Feeling of Insecurity on Jinmen, Mazu, and Other Islands”, in Daily Report: China, numbers 96-056, Foreign Broadcast Information Service, →ISSN, →OCLC, page 75, column 2:

Standard unit of area, symbol km², equal to the area of a square whose sides are one kilometre long; 10⁶ square metres.


gigaparsec

(astronomy) An astronomical unit of distance equal to 10⁹ parsecs.


picobarn

(physics) A unit of surface area equal to 10⁻¹² barns.


megaparsec

(astronomy) An astronomical unit of distance equal to 1 million parsecs.


fluid drachm

From Ancient Greek δραχμή (drakhmḗ, “a weight and coin”).

uder

A British unit of volume equal to 60 minims or 3.55 ml.


column inch

... advertisements, $40 per column inch per year.

1877, Pettengill's newspaper directory and advertisers' hand-book for 1877, page 87:

One mass-circulation Sunday newspaper recently devoted several column inches to an unnecessary weekend working from Stratford to the Essex coast to provide empty stock for an up service that had ceased its high summer running the previous Saturday.

1959 November, “Talking of Trains: The anti-railway prejudice”, in Trains Illustrated, page 517:

Train operating companies get plenty of column inches in the tabloids, usually for negative reasons. Happily, Southeastern is worthy of praise for having made The Sun for something positive.

2024 February 21, Nick Brodrick, “Inclusion and development for all”, in RAIL, number 1003, page 62:

(printing) One inch of a printed column; a measure of space allocated.


qafiz

From Arabic قَفِيز (qafīz), from Aramaic קְפִיזָא and Classical Syriac ܩܦܝܙܐ (qəp̄īzā), of uncertain derivation from Egyptian, Akkadian, and similar units. Doublet of cahiz and cafiso. Cognate with Ancient Greek καπίθη (kapíthē).

der

Aramaic קְפִיזָא

(historical) Any of various medieval units of dry or liquid measure derived from the qafiz.


oitava

From Portuguese oitava, from Old Galician-Portuguese oitavo, from Latin octāvus (“eighth”), q.v., in reference to it making up one-eighth of the alqueire (Portuguese bushel) or onça (Portuguese ounce). Doublet of octave, octavo, and ochava.

(historical) A traditional Portuguese unit of dry measure, equivalent to 1.6–2.4 liters in different 19th-century contexts.


modius

Learned borrowing from Latin modius, from modus (“a measure”) + -ius (adjective-forming suffix). Doublet of muid and mud. See also almud and almude.

(historical) A Roman dry measure of about a peck or 9 litres.


yrneh

electrical inductance
electrical inductance

(rare) A reciprocal unit of measurement for electrical inductance.


femtomolar

(chemistry, of a solution) Having a concentration of 10⁻¹⁵ moles per litre


picokelvin

(physics) A unit of temperature equal to 10⁻¹² of a kelvin


vergée

From Norman vergée, from Anglo-Norman vergé, vergee, originally terre vergee (“measured land”). Doublet of virgate.

Her father had given her a cottage in the Robergerie with a vergée of land and a greenhouse.

1974, GB Edwards, The Book of Ebenezer Le Page, New York, published 2007, page 34:

(Channel Islands) A measure of land, having varying values in Guernsey and Jersey, but approximately 18,000 square feet.


ploughland

en-noun

ploughland (countable and uncountable, plural ploughlands)

From Middle English plowelond, plouȝ-lond, plow-land, equivalent to plough + land. Compare German Pflugland, Old Norse plógsland (“ploughland”).

land that has been or is meant to be ploughed


light second

(astronomy, physics) A unit of length equal to the distance light travels in one second: about 300 megameters


teenth

(slang, used in measuring drugs) A dram, a sixteenth of an ounce.


sextarius

sextarius (plural sextariuses or sextarii)

From Latin sextārius (“one-sixth”), from sextus (“sixth”) + -ārius (“-ary: forming adj.”). Doublet of sextary.

(historical) A Roman unit of liquid measure reckoned as the volume of 1⅔ Roman pound of wine and equivalent to about 0.54 L although varying slightly over time.

(historical) A Roman unit of dry measure.


xylon

The xylon, in which naubia are measured. The royal (xylon) 9 comprises 3 cubits, 18 palms, 72 fingers; 10 the private (xylon) comprises 2⅔ cubits, 16 palms, 64 fingers, so that the surveyor's schoinion comprises 32 royal xyla, and 36 private (xyla).

2020, Roger S. Bagnall, Alexander Jones, Mathematics, Metrology, and Model Contracts, page 81:

(historical) A unit of length in Ancient Greece.


attowatt

(metrology) An SI unit of power equal to 10⁻¹⁸ watts. Symbol: aW


Bps

(computing) Initialism of byte per second.


picoradian

(astronomy) A unit of solid angle equal to 10⁻¹² radians


decare

A unit of surface area equal to 10 ares (that is, 1,000 square metres, 0.10 hectares, or approximately 0.25 acres)


gigaampere

(metrology) An SI unit of current equal to 10⁹ amperes. Symbol: GA


petakelvin

(metrology) An SI unit of temperature equal to 10¹⁵ kelvins. Symbol: PK


kilomole

(metrology) An SI unit of amount of substance equal to 10³ moles. Symbol: kmol


megabecquerel

A unit of radioactivity equal to one million becquerels.


terabecquerel

A unit of radioactivity equal to one trillion becquerels.


kilokelvin

(metrology) An SI unit of temperature equal to 10³ kelvins. Symbol: kK


gigabecquerel

A unit of radioactivity equal to one billion becquerels.


teraampere

(metrology) An SI unit of current equal to 10¹² amperes. Symbol: TA


decaampere

(metrology) An SI unit of current equal to 10¹ amperes. Symbol: daA


kilobecquerel

A unit of radioactivity equal to one thousand becquerels


zettaampere

An SI unit measure of electrical current, equivalent to 10²¹ amperes (a sextillion amperes). 'ZA' is the SI unit symbol for the zettaampere.

zetta-ampère

SI unit of electrical current equal to 1021 amperes


zeptojoule

When a bundle with a drag coefficient of 200 nN · sec · m⁻¹ (Howard and Hudspeth, 1988) produced a 25 nm, triangle-wave twitch 5 msec in total duration (Fig. 12A), the energy dissipated against viscous drag was ~100 zJ (a zeptojoule is 10⁻²¹ J).

1996 September 15, Michael E. Benser, Robert E. Marquis, A. J. Hudspeth, “Rapid, Active Hair Bundle Movements in Hair Cells from the Bullfrog's Sacculus”, in The Journal of Neuroscience, 16(18), p. 5638:

The associated work is
W = 38.5 nm² × (10⁻⁹m/nm)² 35 pN/μm
(10⁻¹² N/pN) (μm/10⁻⁶ m) = 1.35 × 10⁻²¹ J
or about one zeptojoule.

2012, Christopher R. Jacobs, Hayden Huang, Ronald Y. Kwon, Introduction to Cell Mechanics and Mechanobiology, page 327:

However, with zeptojoule scale switching energies and novel functionality, the BiSFET could add a substantial amount of road!

2015, Tsu-Jae King Liu, Kelin Kuhn, CMOS and Beyond, page 204:

(metrology) An SI unit of energy equal to 10⁻²¹ joules. Symbol: zJ


centimole

amount of substance
amount of substance#English

(metrology) An SI unit of amount of substance equal to 10⁻² moles. Symbol: cmol


nanokelvin

(metrology) An SI unit of thermodynamic temperature equal to 10⁻⁹ kelvins. Symbol: nK


megacandela

Under clear sky conditions the luminance of the sun itself is around 1650 Mcd/m² (megacandela/m²)[.]

1980, S. V. Szokolay, Environmental science handbook for architects and builders, page 99:

Searchlights utilized in helicopter operations range in size from a 450-watt, 0.4 megacandela unit using a type PAR-46 incandescent lamp (see Fig 20-3) up to a 30-kilowatt, xenon-lamped unit[.]

1987, John E. Kaufman, Jack F. Christensen, IES Lighting Handbook: Application volume, →ISBN:

The light-emitting capacity of an LED is measured in megacandela [recte millicandelas] or mcd. Small commercial LEDs range from 10 to about 5000 mcd.

2012, Julio Sanchez, Maria P. Canton, Embedded Systems Circuits and Programming, →ISBN, page 12:

(metrology) An SI unit of luminous intensity equal to 10⁶ candelas. Symbol: Mcd


yoctomole

A low cost, 0.75-mW helium neon laser, operating in the green region at 534.5 nm, is used to excite fluorescence from tetramethylrhodamine isothiocyanate-labelled DNA fragments that have been separated by capillary gel electrophoresis.The detection limit (3σ) for the dye is 500 ymol [1 yoctomole (1 ymol) = 10⁻²⁴ mol] or 300 analyte molecules in capillary zone electrophoresis

1991, Da Yong Chen et al., “Low-cost, high-sensitivity laser-induced fluorescence detection for DNA sequencing by capillary gel electrophoresis”, in Journal of Chromatography, volume 559, →DOI, page 237:

(metrology) An SI unit of amount of substance equal to 10⁻²⁴ moles. Symbol: ymol. The yoctomole is approximately 0.6 of an individual particle.


exajoule

(metrology) An SI unit of energy equal to 10¹⁸ joules. Symbol: EJ


zeptomole

/ˈzɛptəʊˌməʊl/

It has been repeatedly shown that enzyme-derived ODN-based assays can detect as little as 50 zeptomoles of target DNA corresponding to about 25,000 molecules.

2002, Jeffrey Van Ness, “Present and Future of Tags and Labels in High Throughput Genomic Analysis”, in D. J. Galas, S. J. McCormack, editors, Genomic Technologies: Present and Future: Functional Genomics Series, Caister Academic Press, →ISBN, pages 144–145:

The sensitivity of detection is in the range of zeptomoles […]

2005, Beatriz Sanchez-Vega, “Introduction to Capillary Electrophoresis of DNA: Biomedical Applications”, in John M. Walker, Ralph Rapley, editors, Medical Biomethods Handbook, Humana Press, →ISBN, page 109:

This scatter-based method enables detection of zeptomole quantities of nucleic acid targets […]

2008, Kewal K. Jain, The Handbook of Nanomedicine, Humana Press, →ISBN, page 88:

(physical chemistry) 10⁻²¹ mole, or about 600 molecules. SI symbol: zmol.


kilocandela

(metrology) An SI unit of luminous intensity equal to 10³ candelas. Symbol: kcd


nanocandela

(physics) A unit of luminous intensity equal to 10⁻⁹ of a candela


gigacandela

An SI unit of measurement equivalent to one billion (10⁹) candelas, abbreviated as Gcd.


giganewton

For example, the as-received 203-micrometer (7.98-mil) fibers had an average tensile strength of 3.59 giganewtons per square meter (521 ksi) with a coefficient of variation of 23.5 percent.

1976, Robert J. Smith, Changes in boron fiber strength due to surface removal by chemical etching, NASA:

The following values have been calculated for femurs, in units of square metres per giganewton, where 1 giganewton = 10⁹ newtons, and with body mass given in tonnes, where 1 tonne = 10³ kilograms.

1997, Michael J. Sewell, Mathematics Masterclasses: Stretching the Imagination, Oxford University Press, →ISBN, page 172:

If the fibres are all aligned in one direction, it is quite easy to achieve a modulus of 50 GN/m² and a tensile strength of 600 MN/m², although the shear modulus is at best only a few giganewtons per square metre.

1998 August 3, P. C. Powell, A. J. Ingen Housz, Engineering with Polymers, 2nd edition, →ISBN, page 9:

what does a giganewton do to an asteroid in the order of magnitude say 1/100 of a planet (otherwise it would have no impact at the planet).

2002 January 21, Walter Meissl, “Re: More Venus Terraforming Ideas”, in sci.space.science (Usenet), message-ID <a2hkig$k0b$1@news.tuwien.ac.at>:

Modulus of elasticity is given in units of force per unit area, typically giganewtons per square meter (GN/m²), or gigapascals (GPa).

2003 June 30, Kenneth J. Anusavice, Phillips' Science of Dental Materials, Elsevier Health Sciences, →ISBN, page 82:

I found "Electrostatic Levitation" <[…]> inspiring. However, under standard sunheat and ionization, the +.1 C/kg (It should be positive, not negative, as of course the sun boils electrons off the ground and air making them positive.) fee would strain a Static Shock-sizely pad with at least a giganewton.

2005 December 31, Autymn D. C., “Scientists and Engineers: Make a beginner's flying saucer, better than the Avrocar or Lifter”, in sci.physics (Usenet), message-ID <1136050698.560388.57590@g14g2000cwa.googlegroups.com>:

(metrology) An SI unit of force equal to 10⁹ newtons. Symbol: GN


potrzebie

From a case form of Polish potrzeba, adopted as a catchphrase by Mad magazine in the 1950s, and applied to a system of measurement by American computer scientist Donald Knuth (then a high-schooler).

(humorous) A fictional unit of length defined as the thickness of issue #26 (November 1955) of Mad Magazine, or approximately 2.26 millimetres.


guz

guzes (plural)
guz (plural)
guzzes (plural)

From Hindi गज़ (gaz) and Urdu گز (gaz), from Classical Persian گز (gaz). Doublet of gudge.

A unit of length used in parts of Asia, ranging from 24 to 41 inches and historically used for measuring textiles, comparable to the English yard.


langley

Named in 1947 after Samuel Pierpont Langley (1834-1906).

A unit of heat transmission in the CGS system of units. It is equivalent to 41,840 J/m² in SI units. Symbol: Ly.


kayser

A unit of wavenumber in the CGS system of units, equivalent to the number of waves in one centimeter.


bigha

Colonel Watson had, within a brick wall, at least four hundred begahs of land, which the East India Company had executed a grant of to him to construct docks […] .

1808–10, William Hickey, Memoirs of a Georgian Rake, Folio Society 1995, p. 208

(India, Bangladesh) A measure of land in India, varying from a third of an acre to an acre.


eotvos

Named after the physicist Loránd Eötvös.

A unit of gravitational gradient in the CGS system of units. 1 eotvos = 10⁻⁹ gals per cm.


barrelage

barrelage (countable and uncountable, plural barrelages)

That is a very large question, and I do not propose to go into it in any detail; but from such figures as I have been able to obtain, I am bound to say that it does appear that there has been not only a diminution, as was pointed out by the Committee, in the barrelage of beer brewed in the United Kingdom, but also in the consumption of spirits.

"We have made real progress since taking over, illustrated by a very healthy increase in barrelage, and the various investments put us in a good position to move forwards," he said.

2011, Andrew Barker, The Publican's Morning Advertiser:

Quantity of beer (or other drink) measured in barrels.


bandle

From Irish bannlamh (“cubit”), from bann (“a measure”) + lamh (“hand, arm”).


pollum

For this kind of work, and for the quantity of lime above mentioned, about ten pollums (the pollum ten pagodas weight) of sugar is commonly used.

1799 April 1, James Anderson, Recreations in Agriculture, Natural-History, Arts, and Miscellaneous Literature, page 6:

In the District south of Quilon to Tavallay, a Five Pollum weight is used for weighing cotton, thread, tamarinds, jagherry, &c. which weight answers to 5848.3 gr. and is thus divided […]

1831, P. Kelly, The Universal Cambist and Commercial Instructor:

(metrology, obsolete) A historic unit of weight used in India, equal to 1 ounce plus 3.25 drams.


amphoric

From Latin amphoricus (“of or related to an amphora”), from amphora + -icus (“-ic: forming adj.”). Equivalent to amphora + -ic.

der

amphoric respiration or resonance

(medicine) Produced by or indicating a hollow cavity in the lungs, giving a sound like that produced by blowing into an empty decanter.

amphorique

medicine: produced by or indicating a hollow cavity in the lungs


cental

From Latin centum (“a hundred”) + -al, perhaps modeled after quintal.

(historical) A weight of one hundred avoirdupois pounds.


fotmal

From Middle English fotmal, from Old English fōtmǣl (“step by step”, literally “foot-measure”), equivalent to foot + -meal. Doublet of footmeal.

(obsolete, units of measure) An old English unit of weight of 70 pounds, used particularly for lead

1⁄70 fotmal & for smaller subdivisions

Tower pound, troy pound, avoirdupois pound


bezzle

en-verb

bezzle (third-person singular simple present bezzles, present participle bezzling, simple past and past participle bezzled)

bezzles (present singular third-person)
bezzling (participle present)
bezzled (participle past)
bezzled (past)

From Middle English besilen, from Old French besiler, besillier (“to mistreat, pillage”); or shortened from English embezzle.

(obsolete) To drink to excess; to revel.


seah

uder

Hebrew סְאִים֙

(historical units of measure) A former Hebrew unit of dry volume, about 7.7 L or 7 quarts.


tical

viss

a Burmese unit of weight equal to 100 ticals

(archaic) The baht, the currency of Siam (now Thailand).


raip

Compare Icelandic reip (“rope”), and English rope.


hemina

From Latin hemina (“half-sextarius”), from Ancient Greek, from ἡμι- (hēmi-, “hemi-: half”) + -ίνα (-ína, “-ina: forming nouns”). As a Spanish unit, via Spanish hemina.

...an Æginean Hemina of Hydromel ...

1727, John Arbuthnot, Tables of Ancient Coins, Weights and Measures. Explain'd and exemplify'd in several dissertations:

(historical) A Roman unit of liquid measure reckoned as the volume of ⁵⁄₆ Roman pound of wine and equivalent to about 0.27 L although differing slightly over time, used in English pharmacy into the 17th century.

(historical) A traditional Spanish unit of dry measure equivalent to about 23 L, used particularly in Leon.

(historical) A traditional Spanish unit of land area, varying in size depending on the land's quality and used particularly in Leon.


absolute scale

(metrology) A temperature scale whose zero corresponds to absolute zero such as the Kelvin scale or Rankine scale.

absoluuttinen lämpötila-asteikko

temperature scale based on absolute zero


almude

From Portuguese almude, from Andalusian Arabic المُدّ (al-mudd), from Arabic مُدّ (mudd), probably via Aramaic 𐡬𐡣𐡩𐡠 (mdyʾ) and מוֹדְיָא (moḏyā) or Classical Syriac ܡܘܿܕܝܳܐ (moḏyā) from Akkadian 𒉘𒈨𒌍 (/maddattu/middattu/, “kind of vessel, unit of volume”). Doublet of almud. Cognate with Ancient Greek μόδιος (módios) and Latin modius.

der

(historical, measure) A traditional Portuguese unit of liquid volume, equal to 14–26 liters.

(historical, measure) Alternative form of almud, similar units of liquid volume in Spain and Turkey.


footmeal

From Middle English footmele, fotmelen, from Old English fōtmǣlum (“step by step, by degrees”), dative plural of Old English fōtmǣl (“a foot-measure, one foot”), equivalent to foot + -meal.

der

Grandees must covet condos, since they let bids rip, And "spaces" measured footmeal now reach record tops.

2001, Arnold Klein, Rangefinder & Powderhorn:

(rare) Step by step: incrementally, little by little, by degrees, one foot (measure) at a time.


thrave

en-verb

thrave (third-person singular simple present thraves, present participle thraving, simple past and past participle thraved)

thraves (present singular third-person)
thraving (participle present)
thraved (participle past)
thraved (past)

From Middle English thraven, from Old English þrafian (“to press; urge; compel; rebuke; argue; contend”), from Proto-West Germanic *þrabōn, from Proto-Germanic *þrabōną (“to press; drive”), from Proto-Indo-European *trep- (“to scamper; trample; quake; tread”). Cognate with Saterland Frisian troawje, droawje (“to trot”), West Frisian drave (“to trot”), Dutch draven (“to lope; trot”), German traben (“to trot”), Swedish trava (“to trot”), Icelandic þrefa (“to wrangle; dispute”).

der

(transitive, UK, dialectal) To urge; compel; importune.


thrave

From Middle English thrave, threve, thrafe, from Old Norse þrefi (“a bunch or handful of sheaves”), related to Old Norse þrifa (“to grasp”). Cognate with Swedish trave, Danish trave.

A daimen icker in a thrave / 'S a sma' request;

(UK, dialect, obsolete) Twenty-four (or in some places, twelve) sheaves of wheat; a shock, or stook.

c. 16th century, Lansdowne MS
The worst of a thrave.

He sends forth thraves of ballads to the sale.

(UK, dialect, obsolete) Two dozen, or similar indefinite number; a bunch; a throng.


svedberg

From Swedish Svedberg. Named after the Swedish chemist Theodor Svedberg (1884–1971).

A non-SI unit of sedimentation rate (symbol S or Sv), the rate at which particles of a given size and shape travel to the bottom of a tube under centrifugal force.


light day

(astronomy, physics) A unit of length equal to the distance light travels in one day; about 170 astronomical units


picul

From Malay pikul, with influence from earlier Dutch, Spanish, and Portuguese pico.

Powder sugar of China, the hundred cattees or peecull worth fortie to fiftie.

c. 1605, John Saris, quoted in Anthony Farrington's The English Factory in Japan (1991), p. 56

The coal is sold for 130 cash... per picul of 133 pounds.

1888, Archibald John Little, Through the Yang-tse Gorges, page 279:

(units of measure) A traditional South and East Asian unit of weight, based upon the load of a shoulder pole and varying by place and over time but usually standardized at about 60 kg.


cuartilla

From Spanish cuartilla, from cuarto and cuarta (“fourth, quarter”) + -illa (“-elle: forming diminutives”), from Latin quartus (“fourth”). Doublet of cuartillo and quartilho.

(historical) A traditional Spanish unit of dry measure, equivalent to about 13.9 L.


ploughgate

Not having one ploughgate of land.

1818 July 25, Jedadiah Cleishbotham [pseudonym; Walter Scott], Tales of My Landlord, Second Series, […] (The Heart of Mid-Lothian), volume (please specify |volume=I to IV), Edinburgh: […] [James Ballantyne and Co.] for Archibald Constable and Company, →OCLC:

(Scotland) The Scottish carucate or hide: a unit of land area and tax assessment intended to support a household.


adarme

From Spanish adarme (“¹⁄₁₆ Spanish ounce, peso”), from Andalusian Arabic الدرهم (ad-dárham), from Arabic دِرْهَم (dirham, “dirham”), from Middle Persian 𐭦𐭥𐭦𐭭 (drahm), from Ancient Greek δραχμή (drakhmḗ, “drachma”). Doublet of dram, drachma, diram, dirham, and dirhem.

bor

<small>¹<big>⁄</big>₁₆</small> Spanish ounce, peso

doublet

(historical) A traditional Spanish unit of mass, equivalent to about 1.8 g.


culeus

From Latin culeus (“large leather sack, punishment of drowning within a sack, unit of bulk liquid measure”), from Ancient Greek κολεός (koleós, “sheath”), from Proto-Indo-European *ḱel- (“to cover”). Doublet of cullion and cojones.

bor

(historical) A Roman unit of liquid measure reckoned as the volume of 1600 Roman pounds of wine and equivalent to about 520 L although differing slightly over time.

(historical, law) A Roman punishment—chiefly for parricide—involving blindfolding, beating, confinement to a leather sack, and drowning in a river or sea.


chalder

[T]he valuation of lands, tenor of leaſes, the rents, the entails, rent charges, life rents, and payments for or out of land revenue, are all reckoned in Scotland by the chalder, boll, firlot, and lippy, and cannot be altered; [...]

1786, Daniel De Foe [i.e., Daniel Defoe], “Appendix. Part I. Containing an Account of Transactions in both Parts of the United Kingdoms, subsequent to the Union; […]”, in A History of the Union between England and Scotland, with a Collection of Original Papers Relating thereto. […], London: Printed for John Stockdale, […], →OCLC, page 600:

An old Scottish dry measure, equal to 16 bolls.


cotyla

From Latin cotyla, from Ancient Greek κοτύλη (kotúlē, “cup, half-pint”).

der

Alternative form of cotyle (“in all senses”)


fanga

From Portuguese fanga, from Andalusian Arabic فَنِيقَة (faníqa, “sack”), from Arabic فَنِيقَة (fanīqa). Doublet of fanega.

(historical) A traditional Portuguese dry measure, equal to about 50–75 liters at different places and times.


lunar distance

(metrology) A unit of length, based on the average distance between the Earth and the Moon.


micromort

From micro- (“one millionth”) + mort (“death”).

prefix

Coordinate term: microlife

This is described as 10 micromorts per operation, and we can compare this figure with other average risks, such as skydiving (also 10 micromorts), or riding a motorcycle in the UK (yoou^([sic]) have to go around 60 miles to rack up 10 micromorts).

2012 February 16, David Spiegelhalter, “Microlives: A lesson in risk taking”, in BBC Future:

Taking one pill from the jar amounts to being exposed to exactly one micromort. The amount you are willing to pay to avoid this risk is called your micromort value. Micromorts help us reason about decisions with small probabilities but very serious outcomes, such as deciding whether to undergo surgery that eliminates life-long pain but fails with a 1% probability, resulting in immediate death.

2020, Gregor Hohpe, The Software Architect Elevator […] , O'Reilly, →ISBN, page 49:

A unit of risk equivalent to a one-in-a-million probability of death.


ounceland

(historical, Scotland) An old Scots unit of measure equal to 20 pennylands.


pennyland

(Scotland, historical) An old Scots unit of measure of land.


markland

An old Scots unit of measure equal to eight ouncelands.


daugh

(historical) An obsolete Scots unit equal to 4 ploughgates, notionally comprising 400 Scottish acres.


Greek foot

From Greek artists' preference for bare feet exhibiting a second toe longer than the hallux, as opposed to the Egyptian statues which used a longer big toe.


chetverik

Borrowed from Russian четвери́к (četverík), from че́тверть (čétvertʹ, “quarter”) + -и́к (-ík).

bor+

An old Russian dry measure, approximately 26.24 litres; one fourth of an osmina.


shkalik

An old Russian liquid measure, equal to 61.5 millilitres.


shtof

An old Russian liquid measure, equal to 1.23 litres.


zolotnik

en-noun

zolotnik (plural zolotniks or zolotniki)

Borrowed from Russian золотни́к (zolotník).

An old Russian unit of weight, equal to 1/96 of a pound or approximately 4.2658 grams.


vershok

An old Russian unit of length, approximately 4.4 centimetres.


bochka

(historical) An old Russian liquid measure, approximately 492 litres.


desiatina

An old Russian unit of area, approximately 10,925 square metres (the Treasury/official desiatina) or 14,567 square metres (proprietor's desiatina).


alqueire

From Portuguese alqueire, from Arabic الكَيْل (al-kayl, “a measure”), from ك ي ل (k y l).

(historical) A traditional Portuguese unit of dry measure, equal to 13.1–19.3 liters in different 19th-century contexts.


attoparsec

(metrology, usually humorous) A unit of measure of 10⁻¹⁸ parsecs, or about 3.085 centimetres (1.215 inches).


canada

From Portuguese canada, from Latin cannatus.

(historical, measure) A traditional Portuguese unit of liquid volume equal to 1.7–2.1 liters depending on the area of Portugal, used particularly for wine.


teraparsec

(astronomy) An astronomical unit of distance equal to 10¹² parsecs.


digit

From Middle English digit, from Latin digitus (“a fingerbreadth; a number”). Doublet of digitus and toe .

bit

position in a sequence of numerals, symbol in a positional number system

The base-10 number 123.4 has four digits: the hundreds digit is 1, the tens digit is 2, the units digit is 3, and the tenths digit is 4.

figure

informal, usually in discussion of money

(mathematics) A position in a sequence of numerals representing a place value in a positional number system.

Hexadecimal numeration (Base sixteen) includes the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 but also A (=10 decimal), B, C, D, E, and F. Sixteen itself is written as the two-digit number 10.

(mathematics) A distinct symbol representing a natural number in a positional number system.

A six-digit eclipse covers half the lunar surface.

(units of measure, astronomy) ¹⁄₁₂ the apparent diameter of the sun or moon, (chiefly) as a measure of the totality of an eclipse.

(historical units of measure) A unit of length notionally based upon the width of an adult human finger, standardized differently in various places and times, (especially) the English digit of ¹⁄₁₆ foot, now equivalent to about 1.9 cm.


digit

en-verb

digit (third-person singular simple present digits, present participle digiting, simple past and past participle digited)

digits (present singular third-person)
digiting (participle present)
digited (participle past)
digited (past)

(transitive) To point at or point out with the finger.