avoirdupois weight

noun

: the series of units of weight based on the pound of 16 ounces and the ounce of 16 drams see Weights and Measures Table

Word History

First Known Use

1619, in the meaning defined above

Kids Definition

avoirdupois weight

noun

: the series of units of weight based on the pound of 16 ounces and the ounce of 16 drams see measure

Medical Definition

avoirdupois weight

noun

: 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