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1. (n.) echinoderm
any marine invertebrate animal of the phylum Echinodermata, including starfishes and sea urchins, characterized by a five-part radially symmetrical body and a calcareous endoskeleton.
Etymology: (1825–35; taken as sing. of NL Echinodermata, neut. pl. of echinodermatus < Gk echîn(os) sea urchin +-o- -o - +-dermatos -derm)
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| Definition of 'echinoderm' |
Princeton's WordNet |
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1. (noun) echinoderm
marine invertebrates with tube feet and five-part radially symmetrical bodies
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| Definition of 'echinoderm' |
Webster Dictionary |
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1. (noun) echinoderm
one of the Echinodermata
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