troy weight

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Related to Troy units: troy weight, Troy system of units

troy weight

, troy
a system of weights used for precious metals and gemstones, based on the grain, which is identical to the avoirdupois grain. 24 grains = 1 pennyweight; 20 pennyweights = 1 (troy) ounce; 12 ounces = 1 (troy) pound

troy weight

[′trȯi ‚wāt]
(mechanics)