apothecaries' unit

Từ điển WordNet v3.1 - WordNet Dictionary

noun

any weight unit used in pharmacy;
an ounce is equal to 480 grains and a pound is equal to 12 ounces
• Syn:
apothecaries' weight
• Hypernyms:
weight unit, weight
• Hyponyms:
grain, scruple, dram, drachm, drachma,
ounce, troy ounce, apothecaries' ounce, troy pound, apothecaries' pound