/ Dictionary / Index R rubefacient: Meaning and Definition of Find definitions for: ru•be•fa•cient Pronunciation: (r"bu-fā'shunt), [key] — adj. causing redness of the skin, as a medicinal application. —n. a rubefacient application, as a mustard plaster. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rubefacient (Thesaurus) rubeba rubefaction Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language