/ Dictionary / Index U ulcerate: Meaning and Definition of Find definitions for: ul•cer•ate Pronunciation: (ul'su-rāt"), [key] — v., -at•ed, -at•ing. —v.i. to form an ulcer; become ulcerous: His skin ulcerated after exposure to radioactive material. —v.t. to cause an ulcer on or in: Continued worry ulcerated his stomach. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ulcerate (Thesaurus) ulcer ulcerative Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language