/ Dictionary / Index G gastric ulcer: Meaning and Definition of Find definitions for: gas'tric ul'cer Pronunciation: [key] — Pathol. Pathol. a peptic ulcer located in the stomach's inner wall, caused in part by the corrosive action of the gastric juice on the mucous membrane. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gastric mill gastrin Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language