root hair root grafting • root nodule · · · Info · Definitions · Characters · · root hair · · Text Common · · Latin · · Scripts 9 · · Length 2 · · Syllables Definitions · · · (noun) thin hairlike outgrowth of an epidermal cell just behind the tip; absorbs nutrients from the soil. Synonyms: root hair. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 h latin small letter h U+0068 i latin small letter i U+0069 o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074