• Avoirdupois

    Pronunciation

    • RP IPA: /ˌævÉ™dəˈpɔɪz/, /ˌævɑːdjuːˈpwɑː/
    • US IPA: /ˌævÉšdəˈpɔɪz/

    Origin

    Old French avoir + du + pois ("good of weight"), compare Modern French poids ("weight")

    Full definition of avoirdupois

    Noun

    avoirdupois

    1. The official system of weights used in UK between 1856 and 1963. It had been the customary system in London since 1300 CE.
    2. The official system of weights used in USA between 1866 and 1959.
    3. Weight; heaviness.he has a lot of avoirdupois
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