Definition of: module

(moj′l) noun
1. A standard or unit of measurement.
2. Archit. A measure of proportion among the parts of a classical order, the size of the diameter or semidiameter of the base of a column shaft usually being taken as a unit.
3. A standard structural component repeatedly used, as in a building, computer, etc.: cubic modules used in the design of a table.
4. A preassembled, self–contained unit, often a component or subassembly of a larger structure: a housing module; a lunar module.
5. Obs. A mere image. [<L modulus <modus measure. Doublet of MOLD¹.]