Longman Dictionary of Contemporary English homepage

Date: 1300-1400
Language: Old French
Origin: avoir de pois 'goods of weight'

avoirdupois

 noun
     
Related topics: Measurement
av‧oir‧du‧pois [uncountable]
TM the system of weighing things that uses the standard measures of the ounce, pound, and ton
Definition from the Longman Dictionary of Contemporary English
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