echinoderm

noun echi·no·derm \ i-ˈkī-nə-ˌdərm \

Definition of echinoderm

:any of a phylum (Echinodermata) of radially symmetrical coelomate marine animals including the starfishes, sea urchins, and related forms

echinodermatous

play \i-ˌkī-nə-ˈdər-mə-təs\ adjective

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Origin and Etymology of echinoderm

New Latin Echinodermata, phylum name, from echin- + -dermata (ultimately from Greek derma skin)


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