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prostomium

play
noun pro·sto·mi·um \prō-ˈstō-mē-əm\

Definition of prostomium

plural -mia \-mē-ə\

  1. :  the portion of the head of an annelid worm (as an earthworm) that is situated in front of the mouth

pro·sto·mi·al play \-mē-əl\ adjective


Origin of prostomium

New Latin, from Greek pro- + stoma mouth — more at stomach


First Known Use: 1870

Rhymes with prostomium


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