metric grain metric function • metric hundredweight · · · Info · Definitions · Synonyms · Characters · · metric grain · · Text Common · · Latin · · Scripts 12 · · Length 3 · · Syllables Definitions · · · (noun) a weight unit used for pearls or diamonds: 50 mg or 1/4 carat. Synonyms: grain, metric grain. · · Noun Definition 1 Synonyms · · · grain · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074