/ Dictionary / Index D duodenal ulcer: Meaning and Definition of Find definitions for: duode'nal ul'cer Pronunciation: [key] — Pathol. Pathol. a peptic ulcer located in the duodenum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. duodenal duodenary Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language