/ Dictionary / Index D diarrhea: Meaning and Definition of Find definitions for: di•ar•rhe•a Pronunciation: (dī"u-rē'u), [key] — n. Pathol. an intestinal disorder characterized by abnormal frequency and fluidity of fecal evacuations. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diarrhea (Thesaurus) diarist diarthrosis Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language