echiuroid

[ek-ee-yoo r-oid]
noun
  1. 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
  1. belonging or pertaining to the Echiuroidea.

Origin of echiuroid

1885–90; < New Latin Echiuroidea; see echiurid, -oidea
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018