Main Entry: Echi·no·der·ma·ta

Pronunciation: \-nə-ˈdər-mət-ə\

Function: noun plural

: a phylum of radially symmetrical coelomate marine animals consisting of the starfishes, sea urchins, and related forms

—echi·no·der·ma·tous \i-ˌkī-nə-ˈdər-mət-əs\ adjective

—echi·no·derm \i-ˈkī-nə-ˌdərm\ noun