Imperial weight

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Possible Answers: OUNCE.

Last seen on: Irish Times Simplex – Sep 16 2020

Random information on the term “Imperial weight”:

Troy weight is a system of units of mass that originated in 15th-century England, and is primarily used in the precious metals industry. The Troy weights are the grain, the pennyweight (24 grains), the troy ounce (20 pennyweights), and the troy pound (12 troy ounces). The troy grain is equal to the grain-unit of the avoirdupois system, the troy ounce is heavier than the avoirdupois ounce, yet the troy pound is lighter than the avoirdupois pound.

Troy weight probably takes its name from the French market town of Troyes where English merchants traded at least as early as the early 9th century. The name “troy” is first attested in 1390, describing the weight of a platter, in an account of the travels in Europe of the Earl of Derby.

Charles Moore Watson (1844–1916) proposes an alternative etymology: The Assize of Weights and Measures (also known as Tractatus de Ponderibus et Mensuris), one of the statutes of uncertain date from the reign of either Henry III or Edward I, thus before 1307, specifies “troni ponderacionem”—which the Public Record Commissioners translate as “troy weight”. The word “troni” refers to markets. Watson finds the dialect word “troi”, meaning a balance in Wright’s The English Dialect Dictionary. Troy weight referred to the tower system; the earliest reference to the modern troy weights is in 1414.

Imperial weight on Wikipedia