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Webster 1913 Edition

Prostomium

‖

Pro-sto′mi-um

,

Noun.

;

pl.

Prostomia

(#)

.

[NL., fr. Gr. [GREEK] before + [GREEK], [GREEK], mouth.]

(Zool.)

That portion of the head of an annelid situated in front of the mouth.

–

Pro-sto′mi-al

(#)

,

Adj.