Avoirdupois Weight

Traditional system of weight in the British Imperial System and the United States Customary System of weights and measures. The name derives ultimately from French avoir de pois (�goods of weight� or �property�). The avoirdupois pound contains 7,000 grains, or 256 drams of 27.344 grains each, or 16 ounces of 437 1/2 grains each. It is used for all products not subject to apothecaries' weight (for pharmaceutical