/ Dictionary / Index A archenteron: Meaning and Definition of Find definitions for: arch•en•ter•on Pronunciation: (är-ken'tu-ron"), [key] — pl. -ter•a the primitive enteron or digestive cavity of a gastrula. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: archenteron (Thesaurus) archenemy archeo- Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language