echinoderm

play
noun echi·no·derm \i-ˈkī-nə-ˌdərm\

Definition of echinoderm

  1. :  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

Recent Examples of echinoderm from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'echinoderm'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of echinoderm

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


First Known Use: 1835


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