One of the mysteries of the English language finally explained.
The rudimentary alimentary cavity of an embryo at the gastrula stage.
space, chamber, hollow, hole, pocket, pouchView synonyms
- ‘In the fossils I and J, the archenteron is thick-walled, and in J all of the cells in the embryo, including the ectodermal wall, are conspicuously larger relative to the size of the embryo.’
- ‘It doesn't seem to do much of anything, except to offer little suggestions to cells migrating into the archenteron.’
- ‘The mesoderm then lies immediately beneath the ectoderm, with the endoderm lining the roof of the archenteron, the future gut.’
Late 19th century: from Greek arkhē ‘beginning’ + enteron ‘intestine’.
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