arch·en·ter·on /ɑrˈkɛntəˌrɑn, rən/
原腸
arch·en·ter·on /ɑrˈkɛntəˌrɑn, rən/ 名詞
原腸腔(動)
Arch·en·ter·on, n. Biol. The primitive enteron or undifferentiated digestive sac of a gastrula or other embryo. See Illust. under Invagination.
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archenteron
n : central cavity of the gastrula; becomes the intestinal or
digestive cavity