auxin auximone • auxinic · · · Info · Definitions · Characters · · auxin · · Text Latin · · Script 5 · · Length 3 · · Syllables Definitions · · · (noun) a plant hormone that promotes root formation and bud growth. · · Noun Definition 1 Characters · · a latin small letter a U+0061 i latin small letter i U+0069 n latin small letter n U+006E u latin small letter u U+0075 x latin small letter x U+0078