/ Dictionary / Index U urticaria: Meaning and Definition of Find definitions for: ur•ti•car•i•a Pronunciation: (ûr"ti-kâr'ē-u), [key] — n. Pathol. a transient condition of the skin, usually caused by an allergic reaction, characterized by pale or reddened irregular, elevated patches and severe itching; hives. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: urticaria (Thesaurus) urticant urticate Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language