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uncia
unit of weight
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comparison to libra
origin of ounce
Roman weight system
- In measurement system: Greeks and Romans
…reckoned to the ounce (uncia) of 423 grains (27.41 grams), and 72 of them made the new pound (libra) of 12 ounces, or 5,076 grains (328.9 grams).
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