Definition of


  1. (noun, quantity) the unit of measurement for the proportion of gold in an alloy; 18-karat gold is 75% gold; 24-karat gold is pure gold
  2. (noun, quantity) a unit of weight for precious stones = 200 mg

via WordNet, Princeton University

Synonyms of Carat

karat, kt

Alternate forms of Carat

Hypernyms: metric weight unit, unit, unit of measurement, weight unit

Origin of the word Carat

  1. 1469, from M.Fr. carat, from It. carato, from Arabic qirat "pod, husk, weight of 4 grains," from Gk. keration "carob seed," lit. "little horn" dim. of keras "horn." Carob beans were a standard for weighing small quantities. As a measure of diamond weight, from 1575. The Gk. measure was the equivalent of the Roman siliqua, which was one-… more

via Online Etymology Dictionary, ©2001 Douglas Harper

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