prostomium

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

Definition of prostomium

plural prostomia play \-mē-ə\
:the portion of the head of an annelid worm (such as an earthworm) that is situated in front of the mouth

prostomial

play \-mē-əl\ adjective

Origin and Etymology of prostomium

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


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