noun
radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers
• Syn: ↑phylum Echinodermata
• Hypernyms: ↑phylum
• Member Holonyms: ↑Animalia, ↑kingdom Animalia, ↑animal kingdom
• Member Meronyms:
Useful english dictionary. 2012.