echinoderm Echinoderidae • Echinoderma · · · Info · Definitions · Characters · · echinoderm · · Text Latin · · Script 10 · · Length Definitions · · · (noun) marine invertebrates with tube feet and five-part radially symmetrical bodies. · · Noun Definition 1 Characters · · c latin small letter c U+0063 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 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072