unit

1. unit (noun) — sense 1

Definition: Oneness, singularity, seen as a component of a whole number; a magnitude of one.

Example: Number, we define, to be, a certayne Mathematicall Sũme, of Vnits. [Note the worde, Vnit, to expresse the Greke Monas, & not Vnitie: as we haue all, commonly, till now, vsed.]

2. unit (noun) — sense 2

Definition: A standard measure of a quantity or magnitude.

Example: The centimetre is a unit of length.

3. unit (noun) — sense 3

Definition: A basic, self-contained component or module that performs a specific function inside a computer system.

4. unit (adj) — sense 4

Definition: For each unit.

Example: We have to keep our unit costs down if we want to make a profit.

5. unit (adj) — sense 5

Definition: Having a size or magnitude of one.

Example: Consider the following time sequence
Z#95;t#61;A#92;sin(#92;omegat#43;#92;theta),
where A is a random variable with a zero mean and a unit variance and #92;theta is a random variable with a uniform distribution on the interval #91;-#92;pi,#92;pi#93; independent of A.