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|Noun||1.||apothecaries' unit - any weight unit used in pharmacy; an ounce is equal to 480 grains and a pound is equal to 12 ounces|
grain - 1/60 dram; equals an avoirdupois grain or 64.799 milligrams
scruple - a unit of apothecary weight equal to 20 grains
apothecaries' ounce, ounce, troy ounce - a unit of apothecary weight equal to 480 grains or one twelfth of a pound