root cap root canal • root celery · · · Info · Definitions · Characters · · root cap · · Text Common · · Latin · · Scripts 8 · · Length 2 · · Syllables Definitions · · · (noun) thimble-shaped mass of cells covering and protecting the growing tip of a root. Synonyms: root cap. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074