leucine Leuciferidae • Leucippus · · · Info · Definitions · Characters · · leucine · · Text Latin · · Script 7 · · Length 3 · · Syllables Definitions · · · (noun) a white crystalline amino acid occurring in proteins that is essential for nutrition; obtained by the hydrolysis of most dietary proteins. · · Noun Definition 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E u latin small letter u U+0075