Unit
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Look up unit in Wiktionary, the free dictionary.

The word unit means any of several things:

Science and technology

• Units of measurement, a fundamental quantity of measurement
• Unit of alcohol, 10 millilitres of pure ethanol in the United Kingdom
• Units conversion by factor-label, a widely used approach for performing Conversion of units
• Unit (chemical engineering), a unit is a vessel or pipe in a chemical plant (see unit operation)
• Units (Unix), a command-line computer program that does unit conversion
• Functional unit, a component of a computer system such as the CPU

• In biochemistry, a unit is the measure of enzyme activity
• In a 19-inch rack a rack unit is a standard height of 1.75 inches
• In blood transfusion, one unit of blood is equal to one pint

In entertainment:

• UNIT - the Unified Intelligence Taskforce in Doctor Who
• Unit (album), an indie pop album by the Australian band Regurgitator
• G-Unit, a hip-hop music group
• The Units, a synthpunk band from San Francisco from 1978 to 1984
• The Unit, an American television series
• Second unit, a team that shoots footage which is of lesser importance for the final motion picture
• Unit of action, a discrete piece of action (or beat) in a theatrical presentation

In mathematics:

• Unit vector, a vector with length 1
• Unit circle, the circle with radius 1 centered at the origin
• Unit interval, the interval of all real numbers between 0 and 1
• Imaginary unit, i, whose square is -1
• Root of unity, a complex number, a power of which is 1
• Unit (ring theory), an element that is invertible with respect to ring multiplication
• Unit type, a type that allows only one value
• In category theory, there is a natural transformation called the unit from the identity functor to the composition of two adjoint functors

Other

• Unit (housing), in Australia/New Zealand - a self-contained suite of rooms within a set of similar dwellings
• A unit, or apartment, can refer to a self-contained section of a building to be rented or otherwise occupied by a party
• Multiple unit, a passenger train whose carriages have their own motors
• Military units, including:
  • Unit 101, an Israeli special operations unit
  • Unit 731, a covert medical experiment unit of the Imperial Japanese Army
  • Unit 1391, an Israeli torture facility
• Strategic business unit
• Unit Corporation, a United States oil and gas producer

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