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 (är-kĕn′tə-rŏn′, -tər-ən)
The central cavity of the gastrula, which ultimately becomes the intestinal or digestive cavity.

ar′chen·ter′ic (är′kĕn-tĕr′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Anatomy) the cavity within an embryo at the gastrula stage of development that eventually becomes the digestive cavity
[C19: from Greek arkhē beginning + enteron intestine]
archenteric adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ɑrˈkɛn təˌrɒn)

pl. -ter•a (-tər ə)
the primitive enteron or digestive cavity of a gastrula.
arch`en•ter′ic (-ˈtɛr ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.archenteron - central cavity of the gastrulaarchenteron - central cavity of the gastrula; becomes the intestinal or digestive cavity
gastrula - double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm
blastopore - the opening into the archenteron
bodily cavity, cavum, cavity - (anatomy) a natural hollow or sinus within the body
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Among them, epidural lipomatosis usually occurs in obese people, patients with a history of corticosteroid use, and those with an endocrinopathy.[2] The Kovalevsky or neurenteric canal is defined as a canal connecting the neural tube and archenteron in the embryo, resulting from a persisting abnormal communication between the notochord and yolk sac and the amnion during an early stage of embryonic development.
archenteron, gone the way, element: elementum, from LMV, first three
ENTEROCOELE the body cavity formed from an outpocketing of the archenteron (a primitive digestive cavity), especially typical of echinoderms and chordates [RHD].
These cells then started to darken, losing their transparency (Figure 4A, B), and became located along the inner surface of the body wall; in contrast, cells in normal larvae retained their transparency and were located near the primary gut (archenteron), moving later through the blastocele to the animal pole (Figure 4C, F).
Some features of early embryos (the blastocoel, the archenteron of the gastrula) could be seen in specimens pressed gently between a glass slide and coverslip.
Three of the sampled embryos were late gastrulae, with an archenteron filled with granular material, but not forming coeloms (data not shown).
Embryos from which micromeres have been removed have delayed initiation of gastrulation and a slower rate of archenteron elongation compared to embryos with micromeres (Ishizuka et al., 2001).
The resulting blastopore started as a wide pit, subsequently deepening into the archenteron (Fig.
During the initial stages of digestive organ development, the archenteron of mouth-forming larvae (36 h) had no TRITC-phalloidin-positive fibrous structures (Fig.
The invaginated archenteron retains a narrow but definite lumen.
Haeckel (1874) suggested that the eumetazoan ancestor was a gastraea with ectoderm, endoderm, and archenteron with blastopore, essentially having the same structure as that of larval and adult cnidarians and of ontogenetic stages of many bilaterians.