/ Dictionary / Index U ulcerative colitis: Meaning and Definition of Find definitions for: ul'cerative coli'tis Pronunciation: [key] — Pathol. Pathol. chronic ulceration in the large intestine, characterized by painful abdominal cramps and profuse diarrhea containing pus, blood, and mucus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ulcerative ulcerogenic Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language