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Webster 1913 Edition

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Noun.

[Pref.

arch-

+ Gr. [GREEK] intestine.]

(Biol.)

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

See also: archentéron

archenteron ‎(plural archenterons or archentera)

a primitive alimentary cavity