troy weight

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Related to troy weight: avoirdupois ounce, OZT

troy weight

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.

troy weight

(trɔɪ) or


(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
[C14: named after the city of Troyes, France, where it was first used]

troy′ weight`

a system of weights in use for precious metals and gems, in which a pound equals 12 ounces (0.373 kg) and an ounce equals 20 pennyweights or 480 grains (31.103 grams).
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.troy weight - a system of weights used for precious metals and gemstones; based on a 12-ounce pound and an ounce of 480 grains
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
References in periodicals archive ?
King Henry II introduced the system and modelled it on troy weight.
But you must agree that things have got far worse since we signed up to the single Troy weight agreement for gold, silver and gemstones.
to describe weights, not that the various cities all used Troy weight (and indeed we believe Troy did not come into general use until about 1380), but because its use leads at once on to the English system which was in widespread use throughout the world until the last few decades.