Central cavity of the gastrula

• Becomes the intestinal or digestive cavity

Wikipedia Word definitions in Wikipedia
The primary gut that forms during gastrulation in the developing zygote is known as the archenteron or the digestive tube . It develops into the endoderm and mesoderm of an animal.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Archenteron \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 .

WordNet Word definitions in WordNet
n. central cavity of the gastrula; becomes the intestinal or digestive cavity

Wiktionary Word definitions in Wiktionary
n. (context anatomy English) A primitive alimentary cavity