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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Middle English avoir de pois, aver de peis, haburdy poyse, haburdepays, haburdepeyse, from Old French aveir + de + peis (“asset of weight”), influenced by Middle French avoir + du + pois; compare French poids (“weight”).
avoirdupois weight
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Classic usage
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