apothecaries' unit

Definitions of apothecaries' unit
  1. noun
    any weight unit used in pharmacy; an ounce is equal to 480 grains and a pound is equal to 12 ounces
    synonyms: apothecaries' weight
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    grain
    1/60 dram; equals an avoirdupois grain or 64.799 milligrams
    scruple
    a unit of apothecary weight equal to 20 grains
    drachm, drachma, dram
    a unit of apothecary weight equal to an eighth of an ounce or to 60 grains
    apothecaries' ounce, ounce, troy ounce
    a unit of apothecary weight equal to 480 grains or one twelfth of a pound
    apothecaries' pound, troy pound
    an apothecary weight equal to 12 ounces or 373.242 grams
    type of:
    weight, weight unit
    a unit used to measure weight
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