(definition) by Webster 1913 Tue Dec 21 1999 at 21:53:03

Arch`en"ter*on, n. [Pref. arch- + Gr. intestine.] Biol.

The primitive enteron or undifferentiated digestive sac of a gastrula or other embryo. See Illust. under Invagination.

 

© Webster 1913.

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