[kar.at] n [ME, prob. fr. MF carat, fr. ML carratus unit of weight for precious stones--more at carat] (15c): a unit of fineness for gold equal to 1/24 part of pure gold in an alloy
KARAT
Meaning of KARAT in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012