/ Dictionary / Index I intestinal flu: Meaning and Definition of Find definitions for: intes'tinal flu' Pronunciation: [key] — Pathol. Pathol. influenza with abdominal symptoms, as diarrhea or vomiting. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. intestinal bypass intestinal fortitude Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language