troy weight (redirected from Troy system of mass)

troy weight

n.

A system of units of weight in which the grain is the same as in the avoirdupois system and the pound contains 12 ounces, 240 pennyweights, or 5,760 grains.

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troy weight, troy [trɔɪ]

n

(Mathematics & Measurements / Units) 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

[named after the city of Troyes, France, where it was first used]

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troy weight  (troi)

A system of weights and measures in which the grain is the same as in the avoirdupois system, and a pound contains 12 ounces, or 5,760 grains. Troy weight is used primarily by miners and gold dealers. Compare avoirdupois weight.

Thesaurus

Noun

1.

troy weight - a system of weights used for precious metals and gemstones; based on a 12-ounce pound and an ounce of 480 grains troy system of weights, weight - a system of units used to express the weight of something troy unit - any of the unit of the troy system of weights