Archenteron

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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}.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  archenteron
       n : central cavity of the gastrula; becomes the intestinal or
           digestive cavity