First Known Use: 1835
Dictionary
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
— echi·no·der·ma·tous \-ˌkī-nə-ˈdər-mə-təs\ adjective
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Origin of ECHINODERM
New Latin Echinodermata, phylum name, from echin- + -dermata (ultimately from Greek derma skin)
Rhymes with ECHINODERM
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