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Unit may refer to:


Arts and entertainment

* UNIT, a fictional military organization in the science fiction television series ''Doctor Who'' * Unit of action, a discrete piece of action (or beat) in a theatrical presentation


Music

* ''Unit'' (album), 1997 album by the Australian band Regurgitator * The Units, a synthpunk band


Television

* '' The Unit'', an American television series * '' The Unit: Idol Rebooting Project'', South Korean reality TV survival show


Business

*
Stock keeping unit In inventory management, a stock keeping unit (abbreviated as SKU and pronounced or ) is the unit of measure in which the stocks of a material are managed. Or to put it another way; is a distinct type of item for sale, purchased, or tracked in ...
, a discrete inventory management construct * Strategic business unit, a profit center which focuses on product offering and market segment * Unit of account, a monetary unit of measurement *
Unit coin A challenge coin is a small coin or medallion, bearing an organization's insignia or emblem and carried by the organization's members. Traditionally, they might be given to prove membership when asked and to enhance morale. They are also colle ...
, a small coin or medallion (usually military), bearing an organization's insignia or emblem * Work unit, the name given to a place of employment in the People's Republic of China


Science and technology


Science and medicine

* Unit, a vessel or section of a
chemical plant A chemical plant is an industrial process plant that manufactures (or otherwise processes) chemicals, usually on a large scale. The general objective of a chemical plant is to create new material wealth via the chemical or biological transfo ...
*
Blood unit Blood transfusion is the process of transferring blood products into a person's circulation intravenously. Transfusions are used for various medical conditions to replace lost components of the blood. Early transfusions used whole blood, but mod ...
, a measurement in blood transfusion * Enzyme unit, a measurement of active enzyme in a sample *
Equivalent (chemistry) An equivalent (symbol: officially equiv; unofficially but often Eq) is the amount of a substance that reacts with (or is ''equivalent'' to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction. It is an arch ...
, a unit of measurement used in chemistry and biology * Geological unit or rock unit, a volume of identifiable rock or ice *
International unit In pharmacology, the international unit (IU) is a unit of measurement for the effect, not mass of a substance; the variance is based on the biological activity or effect, for the purpose of easier comparison across similar ''forms'' of substanc ...
, a unit of measurement for nutrients and drugs * Unit of measurement, a definite magnitude of a physical quantity, defined and adopted by convention or by law ** International System of Units (SI), modern form of the metric system ** English units, historical units of measurement used in England up to 1824 ** Humorous units of measurement Some less serious or controversial units ** Unit of length ***
Astronomical unit The astronomical unit (symbol: au, or or AU) is a unit of length, roughly the distance from Earth to the Sun and approximately equal to or 8.3 light-minutes. The actual distance from Earth to the Sun varies by about 3% as Earth orbits ...
, a unit of length roughly between the Earth and the Sun ** Natural unit, a physical unit of measurement * Unit type, a type allowing only one value in type theory * Unit of alcohol, a measure of the volume of pure ethanol in an alcoholic beverage


Computing

*
Central processing unit A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, a ...
, the electronic circuitry within a computer that carries out the instructions of a computer program * GNU Units, a software program for unit conversion * Rack unit, a unit of measure most commonly used to define the size of certain computing equipment


Mathematics

*
Unit (ring theory) In algebra, a unit of a ring is an invertible element for the multiplication of the ring. That is, an element of a ring is a unit if there exists in such that vu = uv = 1, where is the multiplicative identity; the element is unique for t ...
, an element that is invertible with respect to ring multiplication * Unit, identity element * Unit, a
tuple In mathematics, a tuple is a finite ordered list (sequence) of elements. An -tuple is a sequence (or ordered list) of elements, where is a non-negative integer. There is only one 0-tuple, referred to as ''the empty tuple''. An -tuple is defi ...
of length 0; an empty tuple * Statistical unit, a data point on which statistical analysis is performed *
Unit angle The radian, denoted by the symbol rad, is the unit of angle in the International System of Units (SI) and is the standard unit of angular measure used in many areas of mathematics. The unit was formerly an SI supplementary unit (before that ...
, a full turn equal to an angle of 1 * Unit circle, a circle with a radius of length 1 * Unit cube, a cube with sides of length 1 * Unit fraction, a reciprocal of a positive integer * Unit imaginary number, square root of negative 1 (\sqrt) * Unit impulse, an impulse of height 1 *
Unit interval In mathematics, the unit interval is the closed interval , that is, the set of all real numbers that are greater than or equal to 0 and less than or equal to 1. It is often denoted ' (capital letter ). In addition to its role in real analysis ...
, an interval of distance 1 *
Unit matrix In linear algebra, the identity matrix of size n is the n\times n square matrix with ones on the main diagonal and zeros elsewhere. Terminology and notation The identity matrix is often denoted by I_n, or simply by I if the size is immaterial or ...
, a diagonal matrix such that all elements on the main diagonal are 1 and all the others are zero * Unit number, the number 1 *
Unit round-off Machine epsilon or machine precision is an upper bound on the relative approximation error due to rounding in floating point arithmetic. This value characterizes computer arithmetic in the field of numerical analysis, and by extension in the subjec ...
, an upper bound on the relative error due to rounding in floating point * Unit set, a singleton, a set with exactly 1 element * Unit sphere, a sphere with a radius of length 1 * Unit square, a square with sides of length 1 * Unit vector, a vector with length equal to 1


Military

* Active service unit, the former Provisional Irish Republican Army cell * Military unit, an homogeneous military organization whose administrative and command functions are self-contained * Sayeret Matkal (The Unit), the Israeli special forces unit


Other uses

*
Unit (Cristian Fleming) Unit is an electronic musician based in New York City. Unit began releasing electronic music officially at the age of 25, although he had musical involvement for many years prior, playing bass guitar at 17, and began working on electronic music at ...
(born 1974), electronic musician based in New York City * Unit (housing), a self-contained suite of rooms within a set of similar dwellings * Unit (Norway), a government directorate * Unit, course credit at a school or other educational institution * Multiple unit, self-propelled train carriage capable of coupling other units of the same type


See also

* Unit testing, a method by which individual units of source code are tested * Head unit, a component of a stereo system mounted inside of a vehicle * Air unit (disambiguation) * Piece (disambiguation) *
Subunit (disambiguation) Subunit may refer to: * Subunit HIV vaccine, a class of HIV vaccine *Protein subunit, a protein molecule that assembles with other protein molecules *Monomer, a molecule that may bind chemically to other molecules to form a polymer *Sub-subunit, a ...
* UNITA, the second-largest political party in Angola * Unite (disambiguation) *
Unity (disambiguation) Unity may refer to: Buildings * Unity Building, Oregon, Illinois, US; a historic building * Unity Building (Chicago), Illinois, US; a skyscraper * Unity Buildings, Liverpool, UK; two buildings in England * Unity Chapel, Wyoming, Wisconsin, US; a ...
* United (disambiguation) * * {{disambiguation