Meaning

noun one of the inherent cognitive or perceptual powers of the mind

noun detachable compartment of a spacecraft

noun computer circuit consisting of an assembly of electronic components (as of computer hardware)

originBorrowed from French module, from Latin modulus (“a small measure, a measure, mode, meter”), diminutive of modus (“measure”) (whence mode). Doublet of modulus and mold.

Etymology from Wiktionary, CC BY-SA 3.0