echiuroid

noun echi·uroid \ ˌe-ki-ˈyu̇r-ˌȯid \

Definition of echiuroid

:any of a phylum (Echiura synonym Echiuroidea) of marine worms of uncertain taxonomic affinities that have a sensitive but nonretractile proboscis above the mouth

Origin and Etymology of echiuroid

New Latin Echiuroidea or Echiura, ultimately from Greek echis viper + oura tail


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