Unit

From The Collaborative International Dictionary of English v.0.48 [gcide]:

**Unit** \U"nit\, noun [Abbrev. from unity.]

2. (Arith.) The least whole number; one.

Units are the integral parts of any large number. --I. Watts.

3. A gold coin of the reign of James I., of the value of twenty shillings. --Camden.

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 + broot{-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, 1/4 is the **unit** of the fraction
3/4.

{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[deg] Fahr.) through one degree of the Fahrenheit
scale. --Rankine.

{**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[deg] 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}, noun, 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.

From WordNet (r) 3.0 (2006) [wn]:

noun

1: any division of quantity accepted as a standard of
measurement or exchange; "the dollar is the United States
**unit** of currency"; "a **unit** of wheat is a bushel"; "change
per **unit** volume" [syn: {**unit** of measurement}, {**unit**}]

2: an individual or group or structure or other entity regarded
as a structural or functional constituent of a whole; "the
reduced the number of units and installations"; "the word is
a basic linguistic **unit**"

3: an organization regarded as part of a larger social group;
"the coach said the offensive **unit** did a good job"; "after
the battle the soldier had trouble rejoining his **unit**" [syn:
{**unit**}, {social **unit**}]

4: a single undivided whole; "an idea is not a **unit** that can be
moved from one brain to another"

5: a single undivided natural thing occurring in the composition
of something else; "units of nucleic acids" [syn: {**unit**},
{building block}]

6: an assemblage of parts that is regarded as a single entity;
"how big is that part compared to the whole?"; "the team is a
**unit**" [syn: {whole}, {**unit**}]

The dictionary definitions are retrieved from a local copy of two of the open source __ DICT__ dictionaries. Click

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Wednesday, March 4, 2015 2:51:21 AM Coordinated Universal Time (UTC)

DEFINE.COM_Unit_2015-03-04_02-51-21_54-159-190-90