1 a standardized part or independent unit used in construction, esp. of furniture, a building, or an electronic system.
2 an independent self-contained unit of a spacecraft (lunar module).
3 a unit or period of training or education.
4 a a standard or unit of measurement. b Archit. a unit of length for expressing proportions, e.g. the semidiameter of a column at the base.
Etymology: F module or L modulus: see MODULUS
Useful english dictionary. 2012.