Etymology

absolute unit

Today it means: A unit of measurement that can be defined in terms of mass, length, and time. Full definition →

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absolute unit · noun1

Compound of absolute (“independent, not relative”) + unit. Attested from the 19th century. Compare various scientific terms with prefix ab-, such as abohm.

absolute unit · noun2

Compounded of British colloquial senses of absolute (“utter, complete”) + unit (“physically large person”). Attested from the 2010s.

Etymology from Wiktionary, CC BY-SA 4.0.