carat carassius vulgaris • caratch · · · Info · Definitions · Synonyms · Characters · · carat · · Text Latin · · Script 5 · · Length 2 · · Syllables Definitions · · · (noun) a unit of weight for precious stones = 200 mg. · · Noun Definition 1 (noun) the unit of measurement for the proportion of gold in an alloy; 18-karat gold is 75% gold; 24-karat gold is pure gold. Synonyms: karat, kt. · · Noun Definition 2 Synonyms · · · karat · · Synonym 1 kt · · Synonym 2 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 r latin small letter r U+0072 t latin small letter t U+0074