echiuroid

[ ek-ee-yoo r-oid ]
/ ˌɛk iˈyʊər ɔɪd /

noun

any wormlike invertebrate of the phylum Echiuroidea, found in sand and mud of tropical and subtropical seas, having at the mouth a ciliated, often elongated prostomium.

adjective

belonging or pertaining to the Echiuroidea.

Origin of echiuroid

1885–90; < New Latin Echiuroidea; see echiurid, -oidea