histidine histaminic • histie · · · Info · Definitions · Characters · · histidine · · Text Latin · · Script 9 · · Length Definitions · · · (noun) an essential amino acid found in proteins that is important for the growth and repair of tissue. · · Noun Definition 1 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074