{{wiktionary|unit}} '''Unit''' may refer to: {{TOC right}}
== General measurement == * [[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 of measurement|English units]], historical units of measurement used in England up to 1824 **[[Unit of length]]
==Science and technology==
=== Physical sciences === * [[Natural unit]], a physical unit of measurement * [[Geological unit]] or rock unit, a volume of identifiable rock or ice * [[Astronomical unit]], a unit of length roughly between the Earth and the Sun
===Chemistry and medicine=== * [[Equivalent (chemistry)]], a unit of measurement used in chemistry and biology * Unit, a vessel or section of a [[chemical plant#Chemical processes|chemical plant]] * [[Blood unit]], a measurement in blood transfusion * [[Enzyme unit]], a measurement of active enzyme in a sample * [[International unit]], a unit of measurement for nutrients and drugs
===Mathematics=== * Unit number, the number [[1]] * Unit, [[identity element]] * [[Unit (ring theory)]], an element that is invertible with respect to ring multiplication * Unit, a [[tuple]] of length 0; an empty tuple * [[Statistical unit]], a data point on which statistical analysis is performed * [[Unit angle]], 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 <math>(\sqrt{-1})</math> * [[Unit impulse]], an impulse of height 1 * [[Unit interval]], an interval of distance 1 * [[Unit matrix]], a diagonal matrix such that all elements on the main diagonal are 1 and all the others are zero * [[Unit round-off]], 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 * [[Unit type]], a type allowing only one value in type theory
===Computing=== * [[Central processing unit]], 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 * [[Unit testing]], a method by which individual units of source code are tested
==Business== * [[Stock keeping unit]], 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 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 * [[Telephone card]] unit. When bought contains a certain amount of units, which make up their own currency for making telephone calls, that may not necessarily correspond to the monetary cost of the actual telephone card.
==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
==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=== * [[Album-equivalent unit]], a unified measure of music sales across traditional and digital formats * [[Unit (album)|''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
==Other uses== * [[Unit of alcohol]], a measure of the volume of pure ethanol in an alcoholic beverage * [[Unit (currency)]], a proposal for a new international currency developed by the BRICS+ Business Council * [[Unit (housing)]], a self-contained suite of rooms within a set of similar dwellings * Unit, [[course credit]] at a school or other educational institution * Prison Unit, a group of [[prison cell|cells]] forming a cellblock or complex within a [[prison]], such as the [[John B. Connally Unit]], or [[Unit 32]]. * [[Multiple unit]], self-propelled train carriage capable of coupling other units of the same type * [[Head unit]], a component of a stereo system mounted inside of a vehicle * [[Unit (Cristian Fleming)]] (born 1974), electronic musician based in New York City * [[Unit (Norway)]], a government directorate
==See also== * [[Air unit (disambiguation)]] * [[Piece (disambiguation)]] * [[Subunit (disambiguation)]] * [[Changan UNI-T]], a compact crossover SUV * [[Uni.T]], a South Korean girl group * [[UNITA]], the second-largest political party in Angola * [[Unite (disambiguation)]] * [[Unity (disambiguation)]] * [[United (disambiguation)]] * {{lookfrom}} * {{intitle}}
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