avoirdupois
- Noun. The official system of weights used in UK between 1856 and 1963. It had been the customary system in London since 1300 (C.E.) .
- Noun. The official system of weights used in USA between 1866 and 1959.
- Noun. Weight; heaviness.
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This entry was last updated on RefTopia from its source on 3/20/2012.