Main Entry: echi·no·derm

Pronunciation: \i-ˈkī-nə-ˌdərm\

Function: noun

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

Date: 1835

: 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