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echiuroid

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noun echi·uroid \ˌe-ki-ˈyu̇r-ˌȯid\

Definition of echiuroid

  1. :  any of a phylum (Echiura syn. 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


First Known Use: circa 1889


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