noun ne·mer·te·an \ni-ˈmər-tē-ən\

Definition of nemertean

  1. :  any of a phylum (Nemertea synonym Rhynchocoela) of often vividly colored usually long dorsoventrally flattened marine worms that typically burrow in the mud or sand along seacoasts —called also ribbon worm


play \ˈne-mər-ˌtīn\ adjective or noun

Origin and Etymology of nemertean

ultimately from Greek Nēmertēs Nemertes, one of the Nereids

First Known Use: 1861

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