klafter

... for the purpose of working the machine, employed in raising water from the mines, and a tunnel of 300 klafters long, passing through a mountain, which serves as a road for foot-passengers, between Herrengrund and Altgebirg.

1818, Richard Bright, Travels from Vienna Through Lower Hungary: With Some Remarks on the State of Vienna During the Congress, in the Year 1814:

The building for the protection of the horses was erected on three sides of a square of 48 klafter, and was 12 klafter wide, making a structure 72 klafters long on each side, giving a covered space of 2,304 square klafter.

1874, W. P. Blake, Report on the Vienna Exposition, in the United States Congressional Serial Set, page 133

Ten or more families unite to dig a hole 20 to 30 klafters long and 3 to 4 wide, add to this excavation with a frame of driftwood,148 of which they also make the roof, and cover it with long dry grass or sod, which is held down with[…]

According to this instruction, one lot must be 75 to 100 klafters long and 12 to 15 klafters wide (1 klafter = 1[.]896 m). A house must be on the street line of a lot with its narrow side and the distance between houses should be at least[…]

2012 May 31, C. Mileto, F. Vegas, V. Cristini, Rammed Earth Conservation, CRC Press, →ISBN, page 84:

A unit of length formerly widely used in Central Europe, derived from the span of a man's outstretched arms, typically defined as six local feet (equivalent to a fathom) or about 1.8 meters.


maquila

From Spanish maquila, from Andalusian Arabic مَكِيلَة (makíla), from Arabic مَكِيلَة (makīla, “measured”). In reference to factories, via Spanish clipping of maquiladora, from maquilar (“to assemble”) + -adora (“-ator: forming agent nouns”), from maquilar's original sense of taking a toll of grain. Also understood as a clipping within English.

Synonym of medio, half-celemin, a traditional Spanish unit of dry measure equivalent to about 2.3 L.


newton metre

A standard unit of torque or (rarely) energy, symbol N m or N·m.


clothyard

(historical) An old unit of measure for cloth, 36 or 37 inches.


ferrado

From Galician ferrado, from Medieval Latin modius ferrātus (“reinforced modius”), from Latin ferrātus (“ironed”), from ferrum (“iron”) + -ātus (“-ate”).

(historical) A traditional Galician unit of dry measure, equivalent to about 12–18 L depending on the substance measured.


almud

From Spanish almud, 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 almude. Cognate with Ancient Greek μόδιος (módios), Latin modius, French muid, and Dutch mud.

der

An almud is a measure of volume rather than weight; an almud of wheat equals about 22 pounds and an almud of potatoes 20 pounds.

1990, Carmen Diana Deere, Household and Class Relations: Peasants and Landlords in Northern Peru, University of California Press, page 79:

Both sexes were equally familiar with and preferred the Spanish almud (equal to four quarts of seed), often rendered almo in Nahuatl, over any indigenous measure.

1997, Stephanie Wood, “Nahuatl Testaments of Rural Women”, in Susan Schroeder, Stephanie Wood, Robert Stephen Haskett, editors, Indian Women of Early Mexico, University of Oklahoma Press, page 174:

(historical) Synonym of celemin, a traditional Spanish unit of dry measure equivalent to about 4.6 liters.

celemin

(historical) A traditional Spanish unit of dry measure, highly variable depending on the location and the substance measured but generally between 3 and 20 liters.

(historical) A traditional Spanish unit of land area (nominally, the area cultivable by an almud of some particular seed), highly variable depending on the location.

(historical) Alternative form of almude, Portuguese forms of the same measure.


barrel bulk

A measure equal to five cubic feet, used in estimating capacity, as of a vessel for freight.


geometrical pace

en-noun

geometrical pace (plural geometrical paces)

Calque of Latin passus geometricus or French pas géometrique.

(historical, rare) A unit of measure used in the 16th century, defined as "five feet" or "five geometrical feet".


maquia

From Portuguese maquia, from Andalusian Arabic مَكِيلَة (makíla), from Arabic مَكِيلَة (makīla, “measured”). Doublet of maquila.

(historical) A traditional Portuguese unit of dry measure, equivalent to 0.8–1.2 liters in different 19th-century contexts.


hartley

Named after Ralph Hartley (1888–1970), electronics researcher.

A unit of information (symbol Hart) representing the information content of an event if the probability of that event occurring is 1/10. It is therefore equal to the information contained in one decimal digit


girah

A former unit of length in India and Pakistan, approximately 2.25 inches (5.715 cm).


stremma

From Byzantine Greek στρέμμα (strémma, “a turning”), referring to the turning of the soil.

A Greek unit of land area, now equal to a decare (1,000 m²) but (historical) previously 10,000 square Greek feet.


micromilligram

Alternative spelling of nanogram. symbol:ŋmg


micromicrogram

From micromicro- + gram, equivalent to micro- + microgram.


Altuve

After José Altuve, Venezuelan-American baseball player who stands five feet, five inches tall.

So, if you want to know the minimum length of a World Cup Soccer field while watching TV, it's 60.9 Altuves.

2014 June 30, Bob Nightengale, “Diminutive dandy: Jose Altuve keeps reaching new heights”, in USA Today:

In 2012 Houston Astros fan Bryan Trostel was watching a game when he heard the announcers joke about how many “altuves” a home run had traveled.

2015, Uncle John's FACTASTIC Bathroom Reader, →ISBN:

Judge is 1.22 Altuves. Is there a drawback to being a big man in baseball?

2017 October 13, Victor Mather, “David vs. Goliath Gets an Update: It's Now Altuve vs. Judge”, in New York Times:

No matter how you slice it, Altuve is one of the best hitters in baseball despite yielding at least 7 inches (that’s about .108 Altuves) to every other elite hitter.

2018 February 20, Kate Preusser, Isabelle Minasian, Tim Cantu, Connor Donovan, “2018 AL West Preview: The Astros’ Lineup”, in Lookout Landing:

Want to know how many Altuves there are from home plate to first base? That would be 16.61436219309581.

2018 June 1, Melanie Hauser, “Ways to recover from the Rockets' loss”, in Houston Chronicle:

(baseball, slang) A distance of five feet and five inches, used chiefly as a unit to measure distances of home run balls.


hoppus

A unit of measure of volume equal to 1.273 cubic feet or 2,200 cubic inches. Used in the British Empire as a measure of lumber.


siriometer

From Sirius and meter. It is roughly twice the distance from Earth to the star Sirius.

The siriometer dates its pedigree from the founder of stellar astronomy, William Herschel. As is well known, the distance unit used by Herschel is the mean distance of the first magnitude stars, which distance was called by him the distance of Sirius.

1925, The Observatory, volume 48, page 143:

He had used the star Sirius as his standard, so he decided to call the distance to Sirius, whatever it might turn out to be in miles or kilmetres, one 'siriometer'. Herschel calculated that the grindstone measured 1,000 siriometers across and was 100 siriometers thick.

2013, Kitty Ferguson, Measuring the Universe: The Historical Quest to Quantify Space, Random House, →OCLC:

A unit of distance equal to one million astronomical units or 15.813 light-years.


TNT equivalent

The amount of energy released by an explosion expressed in terms of the amount of TNT needed to generate a similar explosion. Used especially to describe nuclear bombs.


millidarwin

Haldane concluded as Darwin had that the rate of evolution by natural selection in the world around us must be infinitesimally slow, far too slow to watch, that it could only be watched in the long, slow additions of the fossil record. Rates in the living world would have to be measured in millidarwins. In artificial selection, he said, you get rates of thousands of darwins, but that is not something you would see in the wild: "Rates of one darwin would be exceptional in nature."

2014, Jonathan Weiner, The Beak of the Finch: A Story of Evolution in Our Time, Knopf Doubleday Publishing Group, →ISBN, page 110:

A unit of evolutionary change equivalent to one thousandth of a darwin.


darwin

Named after Charles Darwin, coined by J.B.S. Haldane in 1949.

One darwin (d) equals the rate of evolution that would produce a change in size by a factor of approximately 2.7 in one million years.

1999, J. William Schopf, Evolution!: Facts and Fallacies, page 50:

The rate of evolutionary change in a species' wing or leg or beak (remember Darwin's finches mentioned in Chapter 1?) is assessed in degree-of-physical-change units called darwins.

2003, Donald Mitchell, The 2,000 Percent Solution, page 243:

For instance, gradual change is relatively common in vertebrates (about .08 darwins), though some rapidly evolving vertebrates lineages show rates as high as 10 darwins, over short periods.

2010, Sahotra Sarkar, Anya Plutynski, A Companion to the Philosophy of Biology, page 177:

evolutionary biology
evolutionary biology

A unit of evolutionary change in evolutionary biology.


seat-mile

(transport) A unit of measure of passenger carrying capacity, equal to the number of seats available multiplied by the number of miles flown.


choenix

If the kings do not come to the public supper, each of them must have two choenixes of meal and a cotyle of wine sent home to him at his house; if they come, they are given a double quantity of each, and the same when any private man invites them to his table.

1942, “Erato”, in George Rawlinson, transl., The Persian Wars, translation of original by Herodotus:

(historical) An ancient dry measure of two pints or greater.


Chinese foot

From its rough resemblance to the English foot.

A chi, a traditional Chinese unit of distance based on the human forearm, now standardized variously as (Mainland China) ¹/₃ or (Taiwan) ¹⁰/₃₃ of a meter.


Japanese foot

From its rough similarity to the English foot measurement.

A shaku, a traditional Japanese unit of distance based on the human forearm, now standardized as ¹⁰⁄₃₃ of a meter.


Chinese mile

By analogy with the similar Roman and English unit, although the li was somewhat shorter.

A li, a traditional Chinese unit of distance equal to 1500 Chinese feet or 150 zhangs, now standardized as a half-kilometer (500 meters).


chek

From the Yale romanization of the Cantonese 尺 (cek³). Doublet of chi.


candareen

A traditional unit of weight in East Asia, approximately 378 milligrams and equivalent to ten cash. A troy candareen is approximately 374 milligrams.


deciare

A measure of area, equivalent to one tenth of an are, or ten square metres.


caballeria

From Spanish caballería, from caballero (“horseman, gentleman, cowboy”) + -ía (“-y: forming nouns”), from Late Latin caballārius (“horseman, rider”), from Latin caballus (“horse”) + -ārius (“-ary”). Doublet of cavalry and chivalry.

der

(historical, law) A medieval Spanish land tenure equivalent to a knight's fee, held under an obligation for military service.

(historical) A traditional Spanish unit of land area, equivalent to 38.64 ha.


survey mile

From its continued use until the 1980s in reference to the US Geological Survey's 1927 geodetic datum.

(US) The mile of ⁶³³⁶⁄₃₉₃₇ kilometers employed by the United States prior to its adoption of the international mile by treaty in the 1950s.


Italian mile

From Calque of Italian miglio (“(Italian) mile”), with a qualifier to distinguish it from other miles.

calque

(units of measure) Various traditional Italian units of length, particularly the Genovese and Roman miles


land mile

(unit of measurement) Any of the various miles used to measure length on land, as opposed to the nautical mile.


quartilho

From Portuguese quartilho, from quarto (“fourth”) + -ilho (“-elle: forming diminutives”), in reference to its size being one-fourth the canada. Doublet of cuartillo and cuartilla.

(historical, measure) A traditional Portuguese unit of liquid volume, varying in size between 350 and 530 mL.


hoppus foot

Named after Edward Hoppus, an 18th-century English surveyor.

A unit of measurement for the volume of timber in the round, with a value equal to 1.27 cubic feet, where the cross-sectional area is taken as the square of one quarter of the circumference of the round.


hoppus ton

A unit of measurement for the volume of timber in the round, with a value equal to 50 hoppus feet or 1.8027 cubic metres.


linear foot

A unit of length equal to one foot long.


linear metre

(British spelling) A standard unit of length, symbol m, equal to one metre in length.


linear meter

(American spelling) A standard unit of length, symbol m, equal to one meter in length.


arura

Borrowed from Ancient Greek ἄρουρα (ároura, “arura”), a semantic loan from Egyptian sṯꜣt (“arura”).

(historical) An ancient measure of arable land, a square of 100 Egyptian cubits (mḥ) on each side.


milligravity

The unit of the MAD is milligravity (mg); ie, the Earth’s gravity 1g is equal to 1000 mg.

2015 August 21, “Validation of Cut-Points for Evaluating the Intensity of Physical Activity with Accelerometry-Based Mean Amplitude Deviation (MAD)”, in PLOS ONE, →DOI:

A force equal to one thousandth of Earth's gravitational force


kadam

Cf. Bengali কদম (kodom), corruption of Sanskrit कदम्ब (kadamba).

Kinaram made the elephant sit under a large kadam tree.

2011, Arupa Patangia Kalita, translated by Deepika Phukan, The Story of Felanee, translation of original in Assamese:

Neolamarckia cadamba
Neolamarckia cadamba#Translingual

(India) A tropical evergreen tree, Neolamarckia cadamba (syn. Anthocephalus indicus, Nauclea cadamba), native to South and Southeast Asia.


Winchester gallon

en-noun

Winchester gallon (plural Winchester gallons)

(British) a unit of volume equal to two Winchester quarts, equal to four quarts, or around 4.55 litres.


fanegada

From Spanish fanegada, from fanega + -ada (“-ful”).

(historical) Synonym of fanega (“traditional Spanish unit of volume, mass, or land area”)


tomin

From Spanish tomín, from Andalusian Arabic ثُمْن (ṯúmn), from Arabic ثُمْن (ṯumn, “one-eighth”), from the root ن (n) م (m) ث (ṯ-m-n). Originally used in reference to it forming one-eighth of a castellano.

(historical) A traditional Spanish unit of mass, equivalent to about 0.6 g.

(historical) A former gold Spanish coin, notionally equivalent to a tomin in weight.

(historical) A former silver colonial Spanish coin, notionally equivalent to a gold tomin in value.


Gbps

We measure bandwidth by Gbps.

(computing) gigabits per second, a measure of data transfer rate equal to 1,000 megabits per second.


kirat

From Arabic قِيرَاط (qīrāṭ). Doublet of carat.

bor

Arabic قِيرَاط (qīrāṭ)

A Middle Eastern unit of area, ¹⁄₂₄ of a feddan.


Bubnoff unit

Named after the geologist Serge von Bubnoff (1888–1957).

A unit of speed (abbreviated B) equal to one meter per 1,000,000 years, used in geology to measure rates of lowering of earth surfaces due to erosion.


cubic decimeter

en-noun

cubic decimeter (plural cubic decimeters)


cubic decimetre

cubic decimetre (plural cubic decimetres)

A unit of volume equal to that of a cube having sides each one decimetre in length, equal to 10⁻³ cubic metres and 1 litre. Commonly used in fluid measure and for engine sizes.


Microsoft minute

Microsoft minute (plural Microsoft minutes)

A derogatory reference to the slow performance of Microsoft software.

(humorous, rare) A unit of time longer than one minute.


quartary

From Latin quārtārius (“quarter-sextarius, quarter-pint”), from quārtus (“fourth”) + -ārius (“-ary: forming adj.”). Equivalent to quart + -ary. Doublet of quartarius.

der

(historical, rare, obsolete) Synonym of quartarius, quarter-sextarius, a Roman unit of liquid measure equivalent to about 0.14 L

quartarius

(historical, rare, obsolete) A Roman unit of mass, one-fourth of a Roman pound.


petaparsec

(astronomy) An astronomical unit of distance equal to 10¹⁵ parsecs.


wine gallon

A pre-imperial unit of capacity, roughly equivalent to 3.785 litres; used to measure wine, honey, oils, and other commercial liquids.


kmph

kilometres per hour
kilometres per hour#English


estadal

From Spanish estadal, from estado + -al, from Latin stātus (“state, status, standing”). Doublet of state, status, and estado.

(historical) A traditional Spanish unit of length, equivalent to about 3.3 m.

(historical) A traditional Spanish unit of area, equivalent to about 11.2 m².


congy

From French conge, from Latin congius, q.v. Only attested in English in the obsolete plural form congys.

(historical, obsolete) Synonym of congius, Roman units of liquid measure and mass.


cafiso

From Italian cafiso, from Sicilian cafisu, from Arabic قَفِيز (qafīz), from Aramaic קְפִיזָא and Classical Syriac ܩܦܝܙܐ (qəp̄īzā), of uncertain derivation from Egyptian, Akkadian, and similar units.

Aramaic קְפִיזָא

Alternative form of qafiz (particularly in Italian contexts)


cafiz

(historical) Alternative form of qafiz, particularly in Tunisian contexts


esterling

An obsolete Belgian unit of mass, one twentieth of an ounce.


light minute

Rick: We got some business to attend to a few light minutes south of here.

2015, "Mortynight Run", season 2, episode 2 of Rick and Morty [Rick and Morty are travelling in a spaceship]

(astronomy, physics) A unit of length equal to the distance light travels in one minute.


lethek

uder

Hebrew לֶ֫תֶך

(historical units of measure) A former Hebrew measure of dry volume, equal to about 115 L or 3¼ bushels.


issaron

From Hebrew עשרון ('isarón, “tenth”), from its value as ¹⁄₁₀ of an ephah.

(historical units of measure) Synonym of omer: a Hebrew unit of dry volume equal to about 2.3 L or 2.1 quarts.


kilopixel

NIKA2 (New IRAM KID Array 2) is a camera dedicated to millimeter wave astronomy based upon kilopixel arrays of Kinetic Inductance Detectors (KID).

2016, M. Calvo, A. Benoit, A. Catalano, J. Goupy, A. Monfardini, N. Ponthieu, E. Barria, G. Bres, M. Grollier, G. Garde, J.-P. Leggeri, G. Pont, S. Triqueneaux, R. Adam, O. Bourrion, J.-F. Macías-Pérez, M. Rebolo, A. Ritacco, J.-P. Scordilis, D. Tourres, C. Vescovi, F.-X. Désert, A. Adane, G. Coiffard, S. Leclercq, S. Doyle, P. Mauskopf, C. Tucker, P. Ade, P. André, A. Beelen, B. Belier, A. Bideaud, N. Billot, B. Comis, A. D'Addabbo, C. Kramer, J. Martino, F. Mayet, F. Pajot, E. Pascale, L. Perotto, V. Revéret, L. Rodriguez, G. Savini, K. Schuster, A. Sievers, R. Zylka, “The NIKA2 instrument, a dual-band kilopixel KID array for millimetric astronomy”, in arXiv:


Earth day

(science fiction) A day in Earth time; the period it takes planet Earth to revolve once; a period of 24 hours.


scr.

Abbreviation of scruple (“unit of measure”).


kilogram-force

(obsolete) A unit of force equal to the weight, on earth (subject to standard gravity at 9.80665 m/s²), of a mass of one kilogram; equal to 9.80665 newtons. Symbol kgf or kg_f.


sq yd

Abbreviation of square yard, a unit of area.


yugada

From Spanish yugada, from yugo (“yoke”) + -ada (“-ful”), from Latin iugum. Compare Latin iugerum (“juger”).

(historical) A traditional Spanish unit of land area, equivalent to about 32.2 ha.


ochava

From Spanish ochava (“⅛ Spanish ounce”), from Latin octāvus (“one-eighth”). Doublet of octave, octavo, and oitava.

(historical) A traditional Spanish unit of mass, equivalent to about 3.6 g.


qirat

bor

Arabic قِيرَاط (qīrāṭ)

A unit of weight, one twentieth of a mithqal.


octavius

From New Latin octāvius, a misspelling or alteration of octārius.

apothecaries' system
w:apothecaries' system

(historical) Alternative form of octarius (the pint (eighth of a gallon) in the apothecaries' system)


octarius

Olivae oleum, L. Olea Europæa, E. Olive oil. An octarius of which acts as a gentle laxative.

1814, W. Peck, Veterinary Medicine, and Therapeutics: Containing the Effects of Medicines on various Animals; the Symptoms, Causes, and Treatment of Diseases, with a Select Collection of Formulaes, London, page 40:

(historical) the pint (eighth of a gallon) in the apothecaries' system


ropani

(Nepal) A unit of area equal to 5476 square feet or roughly 0.126 acres.


artab

From Coptic ⲁⲣⲧⲁⲃ (artab), via Old Persian from Akkadian 𒅈𒁕𒁉 (/ardabu/, “capacity measure of about 56 litres”). Also found in Ancient Greek ἀρτάβη (artábē).

der

(historical) A dry measure, in ancient Egypt and Persia.


millimeter of mercury

en-noun

millimeter of mercury (plural millimeters of mercury)

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


Dobson unit

Named after Gordon Dobson, a researcher at the University of Oxford who in the 1920s built the first instrument to measure total ozone from the ground.

A unit of measurement of the amount of a trace gas (typically ozone) in a vertical column through the Earth's atmosphere.


microdegree

Map locations in the Android mapping classes are represented by GeoPoint objects, which contain latitude and longitude measured in microdegrees.

2010, Reto Meier, Professional Android 2 Application Development, page 264:

One millionth of a degree (unit of measurement).


cunca

From Galician cunca (“bowl, ¹⁄₆₀ Galician bushel”), from Old Galician-Portuguese cunca, from Latin concha (“mussel, vessel”), from Ancient Greek κόγχη (kónkhē, “shell, mussel”).

bor

bowl, <small>¹<big>⁄</big>₆₀</small> Galician bushel

der

(historical) A traditional Galician unit of dry measure, equivalent to about 1–1.5 L depending on the substance measured.


beard-second

(humorous) A unit of length about the distance beard hair grows in one second: defined as five nanometers, or 10 nm according to some.


cuartillo

From Spanish cuartillo (“¹⁄₄₈ Castilian bushel, &c.”), from Old Spanish quartillo (“little fourth”) in reference to its forming a fourth celemin, from quarto + -illo (“-elle: forming diminutives”), from Latin quartus (“one-fourth”). Doublet of cuartilla and quartilho.

bor

<small>¹<big>⁄</big>₄₈</small> Castilian bushel, &c.

(historical) A traditional Castilian unit of dry measure, equivalent to about 1.2 L.


mGal

(metrology) The acceleration of one thousandth of a Gal; milligal.


μGal

(metrology) The acceleration of one millionth of a Gal; microgal.


alcohol by volume

A standard measure of the amount of alcohol contained in a given volume of an alcoholic beverage, usually defined as the number of millilitres of pure ethanol present in 100 millilitres of solution at 20 °C (68 °F).


kemple

His Honour, ye see, being under hiding in thae sair times--the mair's the pity--he lies a' day, and whiles a' night, in the cove in the dern hag; but though it's a bieldy eneugh bit, and the auld gudeman o' Corse-Cleugh has panged it wi' a kemple o' strae amaist, yet when the country's quiet, and the night very cauld, his Honour whiles creeps doun here to get a warm at the ingle and a sleep amang the blankets, and gangs awa in the morning.

1814, Sir Walter Scott, Waverley, Or 'Tis Sixty Years Hence, Complete:

Hence the money acquired from the sale of the three kemples, at the average of the above prices, will purchase five cubic yards of this very efficient manure.

1829, George Robertson, Rural Recollections; or, the progress of improvement in agriculture and rural affairs, page 209:

From a crop of wheat, of 40 bushels to the acre, or of 2600 lb., at 65 lb. per bushel, the straw will weigh 9 kemples of 440 lb. each, or 3960 lb., affording just 1/2 more weight of straw than of grain.

1844, Henry Stephens, The Book of the Farm, Detailing the Labours of the Farmer, Farm-Steward, Ploughman, Shepherd, Hedger, Cattle-man, Field-worker, and Dairy-Maid:

(Scotland) The size of a standard load of straw, approximately 450 pounds.


pack-year

(medicine, smoking) A unit for estimating the number of cigarettes a person has smoked previously; it is calculated by multiplying the average number of packs (each containing 20 cigarettes) the person smokes per day by the number of years the person has smoked.

paquet-année

unit for measuring the number of cigarettes a person has smoked previously


light hour

(astronomy, physics) A unit of length equal to the distance light travels in one hour


geopbyte

Any substantial company that doesn't take advantage of its own geopbytes of available data is in danger of eventual extinction.

2015, Jenny Dearborn, Data Driven, page 41:

Chapter 16, “Healthcare Analytics”: Covering data analytics/big data/population management; effectively managing the geopbytes of data out there lurking in our electronic records […]

2015, Patricia Sengstack, Charles Boicey, Mastering Informatics: A Healthcare Handbook for Success, page 18:

You cannot wrap your head around how big a geopbyte is.

Roughly (computing, informal) 10³⁰ bytes; 1024 brontobytes


Planck pressure

en-noun

Planck pressure (plural Planck pressures)

(physics) The unit of pressure in the system of Planck units, equal to one Planck force in one Planck area (or one Planck energy in one Planck volume): p_p=(c⁷)/(hbar G²)≈4.633×10¹¹³ mbox Pa.


teraliter

(US) A unit of volume equivalent to 10¹² liters. Symbol: Tl


EFB

EFB (countable and uncountable, plural EFBs)

electrostatic force balance
electrostatic force balance#English

(metrology) Initialism of electrostatic force balance.


gigadeath

They'll have no reason to hit the datasphere now. There will be no gigadeaths.

2008, Ken MacLeod, Fractions: The First Half of The Fall Revolution, page 285:


kaneh

From Hebrew קָנֶה (qané, “rod”, literally “cane”). Doublet of cane and canna.

bor

(historical) A Hebrew measure of length, equal to six cubits.


aranzada

Borrowed from Spanish aranzada, from aranzata (“ration”), from Old Spanish arenzo and arienço (“Spanish coin”), from Latin argenteus (“silvery, silver piece”).

der

(historical) A traditional Spanish unit of land area, equivalent to about 4472 m², chiefly used for vinyards and olive groves.


Scaramucci

Anthony Scaramucci
White House Director of Communications

Borrowed from Italian Scaramucci, the measurement comes from Anthony Scaramucci's short time as White House Director of Communications.

Ardern's peroration began, “It's been three weeks now since I was asked to take this job ...” From the crowd, a laugh of astonishment. In the space of only two Scaramuccis, to steal the unit of measurement of the day, she had transformed the fortunes of the Labour Party.

2017, Toby Manhire, “The rapture”, in Toby Manhire, editor, The Spinoff Book, New Zealand: Penguin Random House, published 2019, →ISBN:

My White House tenure lasted for approximately 220 “Scaramuccis.”

2018, Dan Pfeiffer, Yes We (Still) Can, London: Biteback Publishing, →ISBN:

If Trump himself had been more experienced at governing, or if he'd kept some senior officials longer than one or two Scaramuccis, or if he'd surrounded himself with true pros, not sycophants and sons-in-law, things might have been different.

2020, Paul Begala, You're Fired, New York: Simon and Schuster, →ISBN, page 14:

(humorous, US politics) A unit of time equal to the duration of Anthony Scaramucci's tenure as White House Director of Communications, variously defined as 10 or 11 days.


toesa

From Spanish and Portuguese toesa, from French toise. Doublet of toise.

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


moio

From Portuguese moio, from Latin modius (“Roman peck of about 9 L”), from modus (“measure”) + -ius (“-y: forming adjectives”). Doublet of moyo.

(historical) A traditional Portuguese dry measure, equal to about 0.78–1.15 m³ at different places and times.


sulung

Learned borrowing from Old English sulung, from sulh (“plough, ploughland”).

lbor

The counting of sulungs (as of hides) is a horrible task on which no two scholars agree, and it is not surprising that before the age of the computer Jolliffe made slips and that his desire to find eighty-sulung units sometimes overrode the evidence or the geographical probabilities.

2000, Nicholas Brooks, Anglo-Saxon Myths: State and Church, 400–1066, →ISBN, page 57:

(historical) A unit of land in medieval Kent, comparable to the hide and the carucate.


blocktime

(Philippines) Units of air time sold by a broadcaster sold for use by another entity, often an advertiser or politician.


ship-pound

(historical) A unit of weight once used in the Baltic ports.


cubic kilometre

en-noun

cubic kilometre (plural cubic kilometres)

a unit of volume, km³, equal to 1,000,000,000 cubic metres


running meter

length of one meter of a product that is sold by meter, such as fabric or board


Haugh unit

The effectiveness of spray oiling one, six, 24, 48, 72, and 96 hours after lay was compared with no oiling with respect to albumen pH and Haugh units after seven, 14, and 21 days storage of the eggs at a temperature of about 10°C (50°F).

2017, William J Stadelman, Egg Science and Technology:

A unit of measure of egg protein quality, based on the egg's weight and the height of the albumen immediately around the yolk.


megacorpse

One million corpses, as a unit of measure in reference to nuclear warfare.


Torr

Clipping of Torricelli. Named after Italian physicist wplink

(metrology) Alternative form of torr (“measure of pressure”).


Torr

(metrology) The unit symbol for a torr (“unit of pressure”)


neros

From Ancient Greek νῆρος (nêros), from Akkadian 𒁹𒌋 (DIŠ.U /nēr/, “600”).

(astronomy, archaic, rare) One sixth of a saros, or about three years.


heqat

(historical units of measure) An Ancient Egyptian dry measure of volume equivalent to 10 hins (or about 4.8 litres).


millistokes

A unit of kinematic viscosity, one thousandth of a stokes.


half an hour

I'll be there in half an hour.

And when he had opened the seventh seal, there was silence in heaven about the space of half an hour.

1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], →OCLC, Revelation 8:1:


Mughal yard

Synonym of guz (“Asian unit of measure”)


attobarn

(physics) A unit of surface area equal to 10⁻¹⁸ barns.


gigahectare

A unit of area equal to a billion (10⁹) hectares


Svedberg unit

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


chilogramme

The distillation is continued by putting fire under the retort; and as soon as two chilogrammes have passed over, another ten chilogrammes of fresh alcohol at 40 degrees are introduced into the mixture, drop by drop, regulating as much as possible the quantity introduced, by that which passes into the receiver. This process is to be continued until there have been drawn off 15 chilogrammes of liquid, which will give, on being rectified in the water bath, 8 chilogrammes of pure ether, and some alcohol of an ethereal scent very proper to be made use of over again.

1809, The Repertory of Arts, Manufactures, and Agriculture, volume XV, London, page 118:

It appears, however, from an official Report, obligingly communicated to us by Dr. Kelly, that the actual standard chilogramme has been found to contain only 15433 English grains.

1821, Alexander Tilloch, The Philosophical Magazine and Journal: Comprehending the Various Branches of Science, the Liberal and Fine Arts, Geology, Agriculture, Manufactures, and Commerce, volume LVII, London: Richard and Arthur Taylor, page 421:

A. 20. Signor Lana. / The Sardinian standards have been compared with the metre and the chilogramme.

1840, Extracts of Papers Printed and Manuscript, Laid Before the Commission Appointed to Consider the Steps to Be Taken for Restoration of the Standards of Weight and Measure, and the Subjects Connected Therewith, London: W. Clowes & Sons, page 3:

The Gramme is equal to 15.434 grains Troy, / […] / A chilogramme is 1000 grammes, = 15434.0000 / A myriagramme is 10000 grammes, = 154340.0000 / All the preceding French weights and measures are deduced from some decimal proportion of the metre. Thus, the chilogramme corresponds wit the contents of a cubic vessel of pure water at the lowest temperature, the side of which vessel is the tenth part of the metre, (the decimetre,) and the gramme answers to the like contents of a cubic vessel, the side of which is the hundredth part of the metre, (the centimetre;) for the contents of all cubic vessels are to each other in the triplicate ratio of their sides.

1840, The Merchants’ Magazine, and Commercial Review, volume I, New York, page 258:

If a chilogramme (kilogramme) of water fall through 772 feet, its temperature will rise one degree Fahrenheit. To discover, then, from what greater height a chilogramme of water must fall to raise its temperature to one degree centigrade, the following proportion will suffice:—100 : 180 : : 772 : 1389.6. But 1389 feet are equal to 423 metres; thus the mechanical equivalent of heat, according to the French system, is 423 metres, by falling through which a chilogramme of water rises through one degree centigrade. […] In the ascending scale a thousand grammes is called a kilogramme or chilogramme. The chilogramme is something less than 2+¹⁄₄ lb. imperial, or consists of 15432.3 English grains. The chilogramme is the commercial unit of weight in France, as the gramme is the basis of scientific weights.

1867, Physiology at the Farm in Aid of Rearing and Feeding the Live Stock, Edinburgh and London: William Blackwood and Sons, pages 599, 614:

Six weights in she-goat forms with a ring on their back; they were used to weigh the meat of this animal. The largest is worth our chilogramme. (Pompeii).

1876, V. J., transl., A New General Hand-book to the National Museum in Naples According to Its Latest Arrangement with an Appendix Relative to Pompeii and a Vade Mecum to the Certosa of S. Martino, Naples: Cav. Gennaro De Angelis and son, translation of original by Achilles Migliozzi, page 281:

We did this by multiplying together the three measurements (L., B., and T.) in millimetres of the print and calculating the value of this parallelopiped, in relation to a chilogramme of the body weight.

This is the aes rude called also aes infectum (unwrought bronze); many of these pieces are preserved in our museums varying in weight from a few grammes to a chilogramme and more. These are the pieces called raudera, rauduscula, rudera.

1900, The Numismatic Circular, volume 8 or 9:


cu in

Alternative form: cu. in.


Tbit

(computing, informal) Abbreviation of tebibit.


Gbit

(computing, informal) Abbreviation of gibibit.


MiBps

You can add 100 MiBps increments of peak data throughput up to your system's hardware capacity by using FC 5268. [...] Host throughput on TS7700 clusters with 25 increments installed are not constrained at 2500 MiBps.

2017 April 11, IBM TS7700 Release 3.3, IBM Redbooks, →ISBN, pages 219–220:

The gp2 volumes have a throughput limit of 128 MiBps - 250 MiBps, depending on volume size.

2020 July 8, Implementing IBM Spectrum Virtualize for Public Cloud on AWS Version 8.3.1, IBM Redbooks, →ISBN:


mile a minute

He talks a mile a minute.


pyramid inch

(historical, pyramidology) A unit of measure claimed by pyramidologists to have been used in ancient times. Supposedly one twenty-fifth of a "sacred cubit", 1.00106 imperial inches, or 2.5426924 centimetres.


fundamental unit

fundamental unit (plural fundamental units)

Synonym of base unit (“unit of measurement”).


anukabiet

An old Thai unit of length, approximately 2.6 centimetres.


ftpi

Abbreviation for the unit of measurement: flux transitions per inch


vintem

From Portuguese vintém, from Portuguese vinteno.

(historical) A former small Portuguese coin, similar to a penny.


foont

Perhaps from French vingt (“twenty”), since a sovereign was worth 20 shillings.

(UK, slang, obsolete) A sovereign (the coin).


gavyuti

Unadapted borrowing from Sanskrit गव्यूति (gavyūti).

ubor

An ancient Indian unit of distance, equivalent to 12,000 feet; supposed to be the distance at which a cow's call or lowing can be heard.


penthemimer

(prosody) A metrical unit equal to half of a pentameter


U.S. survey foot

en-noun

U.S. survey foot (plural U.S. survey feet)

international foot
international foot#English

(US, measurement, geodesy) A measurement unit for distance; the standard foot for surveying in the United States from 1893 to 2022; having a value of 1200/3937 metres (0.3048006096m). The US Survey Foot was replaced by the ISO standard international foot from 2022.


sesma

From Spanish sesma, from Latin sexta (“sixth”), from its use as a sixth of the vara (Spanish yard or rod).

(historical) A traditional Spanish unit of length, equivalent to about 13.9 cm.


achteling

(historical) Synonym of achtel (“old measure”)


davach

Alternative form of daugh (“Scots land unit”)


cat unit

A unit of measure for chemicals, the dose lethal to a cat.


gigalightyear

(astronomy) A unit of a billion light years.


kilolightyear

(astronomy, physics) A unit of a thousand light years.


megalight-year

(astronomy, physics) A unit of a million lightyears.


krosa

Unadapted borrowing from Sanskrit क्रोश (krośa). Doublet of koss.

ubor

Synonym of gavyuti (“ancient Indian unit of distance”).


revi'it

A Talmudic unit equal to a quarter of a log, approximately 100 milliliters.


King-Armstrong unit

en-noun

King-Armstrong unit (plural King-Armstrong units)

Named after Canadian biochemist Earl Judson King (1901–1962) and Canadian physician Arthur Riley Armstrong (1904–?).

alkaline phosphatase
alkaline phosphatase

An obsolete measure of alkaline phosphatase concentration in the blood.


μsecond

In the 625-line system the line banking period is 12 μ'''seconds, so that the active line time is 52 μseconds.

1991, Jim Slater, Modern Television Systems, page 116:

The transmitter was designed as a linear amplifier with a bandwidth of 5 MHz, allowing (in principle) pulse lengths down to about 30 m, although the final pulse width chosen was about 0.1 to 1 μ'''second.

2016, Wayne K. Hocking, Jürgen Röttger, Robert D. Palmer, Toru Sato, Phillip B. Chilson, Atmospheric Radar: Application and Science of MST Radars in the Earth's Mesosphere, Stratosphere, Troposphere, and Weakly Ionized Regions, page 344:

Electrophysiological techniques of two-electrode voltage clamp or patch clamp measure ion currents across membrane of plant cells (protoplasts for patch clamp) under determined applied voltage via the membrane and provide current-voltage curves with resolution up to pA and μseconds (Figures 4 and 5).

2018, Vadim Volkov, Mary J. Beilby, Salinity Tolerance in Plants: Mechanisms and Regulation of Ion Transport, page 61:


μmeter

There is a simple ridge on the leaf of the bean plant, Phaseolus vulgaris, ideally 0.5 μmeters high, which acts as a sensor for the pathogen.

2003, Francisco A. Macias, Juan C.G. Galindo, Jose M. G. Molinillo, Allelopathy: Chemistry and Mode of Action of Allelochemicals:

This is the principle of "activated"electrodes [4], in which a support made of an inert inexpensive material is coated with a thin layer (a few μ'''meters of an active generally more expensive compound that is not available anyway in massive form.

2017, Andrzej Wieckowski, Interfacial Electrochemistry: Theory: Experiment, and Applications, page 61:

Tiny ion-selective microelectrode with tip around a μmeter vibrates within seconds in the vicinity of a cell or plant tissue and measures ion concentrations.

In relation to filter sizing particles are measured in 10-⁶ m = μmeter (μm) = microns.

2019, Erik Trostmann, Water Hydraulics Control Technology:

Spatial sub μmeter resolution in combination with SPR or optical microscopy.

2022, Qiang Wei, Elisabetta Ada Cavalcanti-Adam, Liming Bian, Cell Mechanoresponse at Cell-Material Interface, page 87:


khahoon

(historical) A unit of volume used in India until 1920 consisting of 1280 raik totalling 1.7616 m².


square degree

(geometry) A unit of solid angle equal to π²/32400 steradians


horsepower-hour

(electricity) A unit of energy equal to the amount of work a horse is capable of delivering during an hour.


yottaparsec

(astronomy) An astronomical unit of distance equal to 10²⁴ parsecs.


specific gravity bottle

specific gravity bottle (plural specific gravity bottles)


microlife

microlife (countable and uncountable, plural microlives)

Coordinate term: micromort

If you have unhealthy habits, it costs you microlives. If you smoke, each cigarette reduces your life expectancy on average by around 15 minutes, so two cigarettes loses you a microlife.

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

(countable) A unit of risk representing half an hour change of life expectancy.


ronnagram

The Earth weighs about six ronnagrams.

The arrival of the new prefixes means the Earth can now be said to weigh six ronnagrams, and Jupiter about two quettagrams.

2022 November 18, Ian Sample, “Earth weighs in at six ronnagrams as new prefixes picked for big and small”, in The Guardian:

(metrology) An SI unit of mass equal to 10²⁷ grams. Symbol: Rg


awqiyyah

From Arabic أُوقِيَّة (ʔūqiyya). Doublet of ounce, inch, uncia, ouguiya, and oka.

doublet

An Egyptian unit of weight equivalent to about 37 grams (1.3 oz.)


covado

From Portuguese côvado, from Old Galician-Portuguese côbedo, from Latin cubitum (“cubit”). Doublet of cubit and codo.

(historical, measure) A traditional Portuguese unit of length, usually about equal to 0.6 meters and approximating the length of a forearm and hand.


selamim

(historical) Alternative form of celamim


escropulo

Unadapted borrowing from Portuguese escrópulo, from Latin scrūpulus (“scruple, nagging doubt, 1/24 uncia”), from scrūpus (“sharp stone, anxiety”) + -ulus (“-ule: forming diminutives”). Doublet of scruple and escrupulo.

der

(historical) A traditional Portuguese unit of mass, equivalent to about 1.2 g.


celamim

From Portuguese celamim, from Andalusian Arabic, from Arabic ثُمُنِ (ṯumuni, “of one-eighth”). Doublet of tomin and azumbre.

(historical) A traditional Portuguese unit of dry measure, equivalent to 0.4–0.6 L in different 19th-century contexts.


quintalejo

From Portuguese quintalejo, from quintal (“Portuguese hundredweight”) + -ejo (“-cule: forming diminutives”).

(historical) A traditional Portuguese unit of mass, usually equivalent to 29.4 kg.


arratel

From Portuguese arrátel, from Andalusian Arabic الرَطْل (“rottol”), from Arabic الرَطْل (ar-raṭl), from Aramaic רִיטְלָא / ܪܺܝܛܠܳܐ (rīṭlā), variant of לִיטְרָא / ܠܺܝܛܪܳܐ (līṭrā), from Ancient Greek λίτρα (lítra, “libra, Roman pound”). Doublet of libra, livre, libbra, liter, and rottol.

Aramaic רִיטְלָא

doublet

(historical) A traditional Portuguese unit of mass, usually equivalent to 459 g.


cuarteron

From Spanish cuarterón, from cuarto (“one-fourth”) + -ón (forming related nouns). Doublet of quadroon.

suffix

(historical) A traditional Spanish unit of mass, equivalent to about 115 g.


escrupulo

Unadapted borrowing from Spanish escrúpulo, from Latin scrūpulus (“scruple, nagging doubt, ¹⁄₂₄ uncia”), from scrūpus (“sharp stone, anxiety”) + -ulus (“-ule: forming diminutives”). Doublet of scruple and escropulo.

der

scruple, nagging doubt, <small>¹<big>⁄</big>₂₄</small> uncia

(historical) A traditional Spanish unit of mass, equivalent to about 1.2 g and chiefly used for medicines.


panilla

From Spanish panilla, from Latin panellus.

(historical) Synonym of cuarteron, a Spanish quarter-pound.


celemin

From Spanish celemín, from Andalusian Arabic, from Arabic ثُمُنِ (ṯumuni, “of one-eighth”). Doublet of tomin and azumbre.

(historical) A traditional Spanish unit of dry measure, equivalent to about 4.6 liters.


quartarius

en-noun

quartarius (plural quartariuses or quartarii)

quartariuses (plural)
quartarii (plural)

From Latin quārtārius (“one-fourth”), from quārtus (“fourth”) + -ārius (“-ary: forming adj.”) from its relation to the sextarius. Doublet of quartary.

(historical) A Roman unit of liquid measure reckoned as the volume of 5/12 Roman pound of wine and equivalent to about 0.14 L although varying slightly over time.


copin

From Asturian Spanish copín, variant of copino, from copa + -ino.

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


cahizada

From Spanish cahizada, from cahíz (“cahiz, Spanish qafiz”) + -ada (“-ful”).

(historical) Synonym of cahiz as a measure of land.


cahiz

From Spanish cahíz, from Old Spanish cafiz, from Andalusian Arabic and Arabic قَفِيز (qafīz, “qafiz”), from Aramaic קְפִיזָא and Classical Syriac ܩܦܝܙܐ (qəp̄īzā), of uncertain derivation from Egyptian, Akkadian, and similar units. Doublet of qafiz and cafiso. Cognate with Ancient Greek καπίθη (kapíthē).

der

Aramaic קְפִיזָא

(historical) A traditional unit of dry measure equivalent to about 665.8 L.


husbandland

The complexity of a man’s relationship to lord and neighbour is well illustrated by a grant of land at Dilston in Northumberland to Geoffrey de Cokeside 1339. He received a husbandland (probably of 25 acres) to hold at will for 30s. yearly, a more or less economic rent.

1988, Edward Miller, “Social Structure: Northern England”, in H. E. Hallam, editor, The Agrarian History of England and Wales, volumes 2, 1042–1350, →ISBN, page 698:

(historical) The landholding of a husbandman, that is, a manorial tenant.


ronnametre

The observable universe is about one ronnametre in diameter.

(metrology) An SI unit of length equal to 10²⁷ metres. Symbol: Rm


rontosecond

(metrology) An SI unit of time equal to 10⁻²⁷ seconds. Symbol: rs


quectosecond

Within SI there is the zeptosecond: 1 zs = 0.001 as = 10⁻²¹ s, and the yoctosecond: 1 ys = 0.001 zs = 10⁻²⁴ s. The CIPM has prepared draft resolutions submitted to and to be voted on by the CGPM in 2022–11, one of which involves four additional scaling prefixes to SI, two of which are relevant to the question. These prefixes will not be official unless and until approved by the CGPM, so there is a small risk that I am jumping the gun: the rontosecond: 1 rs = 0.001 ys = 10⁻²⁷ s; the quectosecond: 1 qs = 0.001 rs = 10⁻³⁰ s.

2022 March 19, Howard Ludwig, “Is there a unit of time smaller than an attosecond?”, in quora.com:

quectosecond rontosecond plank time zeptosecond

2023 February 24, eladl, “What is smaller than a yoctosecond?”, in math.answers.com:

You may be interested to take a look at one of the earlier uses of those two new designations, Rontosecond and Quectosecond, officially cited as such from your meetings from 15-18 November 2022 in Paris, of the General Conference on Weights and Measures (CGPM) of your International Commission of Weights and Measures (BIPM) whereby you all adopted Resolution 3 making it a globally acceptable name for the range 10−30 to 10−32 of the infinitesimal scale of time.

2023 May 20, Bruce, “The Work of the Bureau International Poids et Mesures (BIPM)”, in https://81018.com:

(metrology) An SI unit of time equal to 10⁻³⁰ seconds. Symbol: qs


dragonlength

Further investigation proved that the plateau was isolated and ample to pasture a huge herd of food[-]beasts for the dragons. It ended in a sheer drop of several dragonlengths into denser jungle on one side, the sea-side escarpment on the other.

1968, Anne McCaffrey, “The Cold Between”, in Dragonflight, Ballantine Books, published 1974, →ISBN, page 262:

An elv’in scoutship was not a large ship, less than two dragonlengths.

2002, James Clemens (pseudonym; James Paul Czajkowski), Wit’ch Star, New York, N.Y.: Del Rey Books, →ISBN, page 28:

The Copper stood before the massive Black Rock in the center of the Lavadome; it was dozens of dragonlengths high, heavy and black and forbidding.

2007, E. E. Knight (pseudonym; Eric Frisch), chapter 22, in Dragon Outcast (The Age of Fire; 3), Roc Books, →ISBN, page 257:

(fantasy) A distance equal to the length of a dragon.


ronnameter

The observable universe is about one ronnameter in diameter.

An electron’s mass is about one rontogram, Jupiter weighs two quettagrams and the diameter of the observable universe is one ronnameter.

2022 November 23, Katrina Krämer, “SI units get new prefixes for huge and tiny numbers”, in Chemistry World:


ronnasecond

(metrology) An SI unit of time equal to 10²⁷ seconds. Symbol: Rs


exaparsec

(astronomy) An astronomical unit of distance equal to 10¹⁸ parsecs.


zettaparsec

(astronomy) An astronomical unit of distance equal to 10²¹ parsecs.


ronnaparsec

(astronomy) An astronomical unit of distance equal to 10²⁷ parsecs.


quettaparsec

(astronomy) An astronomical unit of distance equal to 10³⁰ parsecs.


quettagram

(metrology) An SI unit of mass equal to 10³⁰ grams. Symbol: Qg


rontogram

The arrival of the new prefixes means the Earth can now be said to weigh six ronnagrams, and Jupiter about two quettagrams. An electron weighs about a rontogram, and a single bit of data stored on a mobile phone adds about 10 quectograms to its mass.

(metrology) An SI unit of mass equal to 10⁻²⁷ grams. Symbol: rg


quectogram

(metrology) An SI unit of mass equal to 10⁻³⁰ grams. Symbol: qg


quettametre

(metrology) An SI unit of length equal to 10³⁰ meters. Symbol: Qm


quettameter

We welcome ronnagrams and quettameters into the likes of kilograms and millimeters.

2022 November 20, Agence France-Presse, “Say hello to quettameters: Scientists decide on new metric prefixes”, in Daily Sabah:


half-mile

These trains in the course of their day's work often travel a distance little less than that from London to Glasgow, stopping and starting every half-mile.

1951 January, “The Inner Circle and its Rolling Stock”, in Railway Magazine, page 61:

They were greeted with applause, medals and the skirl of bagpipes from our lone piper - a sound some told us encouraged tired legs for the last half-mile as the pipes could be heard on the mountain.

2024 August 7, Paul Bigland, “'3 Peaks by Rail': ain't no mountain high enough”, in RAIL, number 1015, page 51:

Half of a statute mile, a measurement of 880 yards, or 2,640 feet, or 804.672 metres.


accumulated thermal unit

en-noun

accumulated thermal unit (plural accumulated thermal units)

A unit of measurement describing the cumulative effect of temperature over time, such that 1 ATU is equal to 1 degree Celsius for one day.


trasarenu

(India, historical) An infinitesimally brief period of time.


person-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.


geographic mile

geographic mile (plural geographic miles)

geographical mile
geographical mile#English


geographical mile

geographical mile (plural geographical miles)

(now inexact) Synonym of nautical mile, exactly 1,852 meters.