/ Dictionary / Index C colitis: Meaning and Definition of Find definitions for: co•li•tis Pronunciation: (ku-lī'tis, kō-), [key] — n. Pathol. inflammation of the colon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: colitis (Thesaurus) colistin coll. Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language