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

First Known Use of echiuroid

circa 1889, in the meaning defined above

History and Etymology for echiuroid

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

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Dictionary Entries near echiuroid

Echites

echium

Echiurida

echiuroid

Echiuroidea

Echiurus

Echo

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The first known use of echiuroid was circa 1889

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