valine validness • valise · · · Info · Definitions · Characters · · valine · · Text Latin · · Script 6 · · Length Definitions · · · (noun) an essential amino acid found in proteins; important for growth in children and nitrogen balance in adults. · · Noun Definition 1 Characters · · a latin small letter a U+0061 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 v latin small letter v U+0076