- a unit of weight for precious stones and pearls, equal to 3.0864 grains (200 milligrams): abbrev. C
Origin of caratFrench ; from Italian carato ; from Arabic qīrāt, pod, husk, weight of 4 grains ; from Classical Greek keration, little horn, carob seed, carat, diminutive of keras, horn
nounAbbr. c or car.
- A unit of weight for precious stones, equal to 200 milligrams.
- Variant of karat.
Origin of caratMiddle English, from Old French, from Medieval Latin quarātus, from Arabic qīrā&tlowdot;, a measure of weight, from Greek kerātion, carob pod, a measure of weight (originally defined in reference to a dried carob seed), from diminutive of keras, kerāt-, horn (from the pod's shape ); see ker-1 in Indo-European roots.