Definition of carat in English:

carat

noun

  • 1A unit of weight for precious stones and pearls, now equivalent to 200 milligrams.

    ‘a half-carat diamond ring’
  • 2

    chiefly British spelling of karat

Origin

Late Middle English ( carat (sense 2 of the noun)): from French, from Italian carato, from Arabic ḳīrāṭ (a unit of weight), from Greek keration ‘fruit of the carob’ (also denoting a unit of weight), diminutive of keras ‘horn’, with reference to the elongated seedpod of the carob.

Pronunciation

carat

/ˈkɛrət//ˈkerət/