/ Dictionary / Index U ulcerous: Meaning and Definition of Find definitions for: ul•cer•ous Pronunciation: (ul'sur-us), [key] — adj. of the nature of an ulcer; characterized by the formation of ulcers. affected with an ulcer or ulcers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ulcerous (Thesaurus) ulcerogenic ule Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language