- troy ounce as a noun:
- 1
troy ounce
noun
1 troy ounce
A unit of apothecary weight equal to 480 grains or one twelfth of a troy pound.
synonyms: apothecaries' ounce, ounce.
Polish: uncja, uncja aptekarska, uncja jubilerska, uncja trojańska, ℥
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