Echinodermata echinodermal • echinodermatous · · · Info · Definitions · Characters · · Echinodermata · · Text Latin · · Script 13 · · Length Definitions · · · (noun) radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers. Synonyms: phylum Echinodermata. · · Noun Definition 1 Characters · · E latin capital letter e U+0045 a latin small letter a U+0061 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 t latin small letter t U+0074