/ Dictionary / Index M mesenteron: Meaning and Definition of Find definitions for: mes•en•ter•on Pronunciation: (mes-en'tu-ron", mez-), [key] — pl. -ter•a midgut. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mesenteritis mesentery Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language