echiurid

echiurid

[ek-ee-yoor-id]
noun
any of various unsegmented marine worms of the phylum Echiura, comprising the spoonworms.

Origin:
< Neo-Latin Echiurida, variant of Echiura < Greek échi(s) viper + -oura neuter plural of -ouros -tailed (derivative of ourá tail); Cf. Echiurus a genus of the phylum; see -ida

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