prostomium

(prō stō′mē əm)

a small, noselike portion of the first body segment in many annelid worms, lying above and overhanging the mouth in earthworms

Origin: ModL: see pro-, stoma, & -ium

See prostomium in American Heritage Dictionary 4

noun pl. pro·sto·mi·a (-mē-ə)

The portion of the head in earthworms and other annelids that is situated anterior to the mouth.

Origin:

Origin: New Latin

Origin: , from Greek prostomion, mouth, lips

Origin: : pro-, in front of; see pro-²

Origin: + stoma, mouth

Related Forms:

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