1. radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers; [syn: Echinodermata, phylum Echinodermata]
WordNet (r) 3.0 (2006):
phylum Echinodermata
n 1: radially symmetrical marine invertebrates including e.g.
starfish and sea urchins and sea cucumbers [syn:
Echinodermata, phylum Echinodermata]