(mathematics) the interval [0,1], that is the set of all real numbers x such that zero is less than or equal to x and x is less than or equal to one / (telecommunications) symbol duration time.

(In the SI system of units) Any unit derived from one of the seven base units of length (meter), mass (kilogram), time (second), electric current (ampere), thermodynamic temperature (kelvin), amount of substance (mole) and luminous intensity (candela).

(military) A type of military unit armed, equipped and trained to fight in rugged, mountainous terrain.

A unit of form, organization or arrangement of any size.

(trains) A locomotive with an engine, generator, and traction motors, but without a control cab.

(linear algebra) An identity matrix

Any standardized, reproducible unit that can be used to measure any physical property.

(chemistry) The basic structural unit of a polymer; the monomer unit which has been polymerized.

Any division of quantity accepted as a standard of measurement or exchange; a unit of measure.

(cinematography) A separate team that shoots footage that is of secondary importance for the final cut of the motion picture, as opposed to first unit.