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arch·en·ter·on är-'kent-ə-.rän, -rən n, pl -tera -ə-rə the cavity of the gastrula of an embryo forming a primitive gut called also gastrocoel
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n.
a cavity that forms in the very early embryo as the result of gastrulation (see gastrula). In humans it forms a tubular cavity, the archenteric canal, which connects the amniotic cavity with the yolk sac.
• archenteric adj.
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arch·en·ter·on (ahrk-enґtər-on) [arche- + enteron] the primordial digestive cavity of those embryonic forms whose blastula becomes a gastrula by invagination; called also gastrocoele and primordial gut.Medical dictionary. 2011.