Definition of avoirdupois weight
: the series of units of weight based on the pound of 16 ounces and the ounce of 16 drams — see weight table
First Known Use of avoirdupois weight
Medical Definition of avoirdupois weight
: a system of weights based on a pound of 16 ounces and an ounce of 437.5 grains (28.350 grams) and in general use in the United States except for precious metals, gems, and drugs
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