echinoderm

/ɪˈkaɪnə(ʊ)ˌdɜːm/

echinoderm means an animal of the phylum Echinodermata, comprising radially symmetric, spiny-skinned marine animals including seastars, sea urchins, sea cucumbers, crinoids, and sand dollars. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

echinoderm is pronounced /ɪˈkaɪnə(ʊ)ˌdɜːm/.

Etymology

From French échinoderme, corresponding to echino- + -derm, after plural of 18th-century Latin echinoderma.

noun

An animal of the phylum Echinodermata, comprising radially symmetric, spiny-skinned marine animals including seastars, sea urchins, sea cucumbers, crinoids, and sand dollars.“Comparatively few additions were therefore made to the previously known Echinoderm-fauna of Brazil, only a single species, a Leptasterias, being with certainty new to science.”