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Unit   /jˈunət/  /jˈunɪt/   Listen
noun
Unit  n.  
1.
A single thing or person.
2.
(Arith.) The least whole number; one. "Units are the integral parts of any large number."
3.
A gold coin of the reign of James I., of the value of twenty shillings.
4.
Any determinate amount or quantity (as of length, time, heat, value) adopted as a standard of measurement for other amounts or quantities of the same kind.
5.
(Math.) A single thing, as a magnitude or number, regarded as an undivided whole.
Abstract unit, the unit of numeration; one taken in the abstract; the number represented by 1. The term is used in distinction from concrete, or determinate, unit, that is, a unit in which the kind of thing is expressed; a unit of measure or value; as 1 foot, 1 dollar, 1 pound, and the like.
Complex unit (Theory of Numbers), an imaginary number of the form a + b-1, when a^(2) + b^(2) = 1.
Duodecimal unit, a unit in the scale of numbers increasing or decreasing by twelves.
Fractional unit, the unit of a fraction; the reciprocal of the denominator; thus, ¼ is the unit of the fraction ¾.
Integral unit, the unit of integral numbers, or 1.
Physical unit, a value or magnitude conventionally adopted as a unit or standard in physical measurements. The various physical units are usually based on given units of length, mass, and time, and on the density or other properties of some substance, for example, water. See Dyne, Erg, Farad, Ohm, Poundal, etc.
Unit deme (Biol.), a unit of the inferior order or orders of individuality.
Unit jar (Elec.), a small, insulated Leyden jar, placed between the electrical machine and a larger jar or battery, so as to announce, by its repeated discharges, the amount of electricity passed into the larger jar.
Unit of heat (Physics), a determinate quantity of heat adopted as a unit of measure; a thermal unit (see under Thermal). Water is the substance generally employed, the unit being one gram or one pound, and the temperature interval one degree of the Centigrade or Fahrenheit scale. When referred to the gram, it is called the gram degree. The British unit of heat, or thermal unit, used by engineers in England and in the United States, is the quantity of heat necessary to raise one pound of pure water at and near its temperature of greatest density (39.1° Fahr.) through one degree of the Fahrenheit scale.
Unit of illumination, the light of a sperm candle burning 120 grains per hour. Standard gas, burning at the rate of five cubic feet per hour, must have an illuminating power equal to that of fourteen such candles.
Unit of measure (as of length, surface, volume, dry measure, liquid measure, money, weight, time, and the like), in general, a determinate quantity or magnitude of the kind designated, taken as a standard of comparison for others of the same kind, in assigning to them numerical values, as 1 foot, 1 yard, 1 mile, 1 square foot, 1 square yard, 1 cubic foot, 1 peck, 1 bushel, 1 gallon, 1 cent, 1 ounce, 1 pound, 1 hour, and the like; more specifically, the fundamental unit adopted in any system of weights, measures, or money, by which its several denominations are regulated, and which is itself defined by comparison with some known magnitude, either natural or empirical, as, in the United States, the dollar for money, the pound avoirdupois for weight, the yard for length, the gallon of 8.3389 pounds avoirdupois of water at 39.8° Fahr. (about 231 cubic inches) for liquid measure, etc.; in Great Britain, the pound sterling, the pound troy, the yard, or 1/108719 part of the length of a second's pendulum at London, the gallon of 277.274 cubic inches, etc.; in the metric system, the meter, the liter, the gram, etc.
Unit of power. (Mach.) See Horse power.
Unit of resistance. (Elec.) See Resistance, n., 4, and Ohm.
Unit of work (Physics), the amount of work done by a unit force acting through a unit distance, or the amount required to lift a unit weight through a unit distance against gravitation. See Erg, Foot Pound, Kilogrammeter.
Unit stress (Mech. Physics), stress per unit of area; intensity of stress. It is expressed in ounces, pounds, tons, etc., per square inch, square foot, or square yard, etc., or in atmospheres, or inches of mercury or water, or the like.





Collaborative International Dictionary of English 0.48


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"Unit" Quotes from Famous Books



... execution, visiting the old pike man in jail, and his company was selected to form guard around the scaffold when John Brown went, white-haired, to his account. There may be in this a consolation for the canonizers of the first arm-bearer between the sections, that one whose unit swelled the host to crush out that brave old life, took from the scene inspiration enough to slay a merciful President in his unsuspecting leisure. Booth never referred to John Brown's death in bravado; possibly at that gallows began ...
— The Life, Crime and Capture of John Wilkes Booth • George Alfred Townsend
... clogged slowness, or was it that he had ceased to be a body, that he was all brain and hair-trigger nerves making every thousandth part of a second seem a unit of time? It seemed to Andrew that the marshal's hand dragged through its work; to those who watched from the sides of the ravine, there was a flash of fire from his gun before they saw even the flash of the steel out of the holster. The gun spat in the hand of Dozier, and something jerked at ...
— Way of the Lawless • Max Brand
... the towns, especially those along the coast, those accessible by mails and newspapers, had recorded their vote, in some shape or other, against slavery. The pressure for legislation on the subject was great. The country members of the Legislature were almost a unit in favor of the passage of a bill prohibiting the further importation of slaves. The opposition came from the larger towns, but the opposers were awed by the determined bearing of the enemies of the slave-trade. The scholarship, ...
— History of the Negro Race in America From 1619 to 1880. Vol 1 - Negroes as Slaves, as Soldiers, and as Citizens • George W. Williams
... weariness fell upon every limb. My legs became heavy and slow. That short rest had stiffened me, and my eyelids closed as I trudged on. I lifted them with an effort and dragged one foot after the other. I knew I must get back to my unit, and that here it was very dangerous. I wanted to lie down on the dead grass and sleep and sleep and sleep. I urged my muscles to swing my legs—for I knew if once I sat down to rest I should ...
— At Suvla Bay • John Hargrave
... a nurse, but in the Supply Department she gained commendation and when a supply unit of the Red Cross was sent to France she went with it, while Helen went over with her father, who was on a commission to the front. Once there, the black-eyed girl found work to do in Paris while Ruth was enabled to be of use much ...
— Ruth Fielding at the War Front - or, The Hunt for the Lost Soldier • Alice B. Emerson


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