ar·chen·ter·on (är-kěn'tə-rŏn', -tər-ən) n. The central cavity of the gastrula, which ultimately becomes the intestinal or digestive cavity. ar'chen·ter'ic (är'kěn-těr'ĭk) adj.
Main Entry: arch·en·ter·on Pronunciation: är-'kent-&-"rän, -r&n Function: noun Inflected Form: pluralarch·en·tera/-&-r&/ : the cavity of the gastrula of an embryo forming a primitive gut called also gastrocoel