- (unit of purity): karat (North America)
Middle French carat, from Italian carato, from Arabic قِيرَاط (qīrāṭ, “carat”) (and meaning other small units as well, such as an inch), from Ancient Greek κεράτιον (kerátion, “carob seed”), diminutive form of κέρας (kéras, “horn”).
carat (plural carats)
- A unit of weight for precious stones and pearls, equivalent to 200 milligrams.
- (historical) Any of several units of weight, varying from 189 to 212 mg, the weight of a carob seed.
- A measure of the purity of gold, pure gold being 24 carats.
- carat (measure of purity of gold)
|Middle Irish mutation|
pronounced with /ɡ(ʲ)-/
|Note: Some of these forms may be hypothetical. Not every|
possible mutated form of every word actually occurs.