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Unit may refer to:
In mathematics:
Unit vector , a vector with length equal to 1
Unit circle , the circle with radius equal to 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 , a natural transformation (called the unit) from the identity functor to the composition of two adjoint functors
In science and technology:
Unit of measurement , a fundamental quantity of measurement
In biochemistry, a unit is the measure of enzyme activity
Unit of electricity, one kilowatt hour of mains electricity
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 (software) , a cross-platform command-line computer program that does unit conversion
Functional unit , a component of a computer system such as the CPU
In blood transfusion, one unit of blood is equal to one pint
Unit of alcohol , 10 millilitres of pure ethanol in the United Kingdom
In a 19-inch rack a rack unit is a standard height of 1.75 inches (44 mm)
In computer programming , unit testing is a method of testing that verifies the individual units of source code are working properly.
In entertainment:
In other uses:
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
In real time strategy games, a unit describes an individual (or squad, depending on the game) infantry or vehicle.