/ Dictionary / Index R ribavirin: Meaning and Definition of Find definitions for: ri•ba•vi•rin Pronunciation: (rī'bu-vī"rin), [key] — n. Pharm. a synthetic compound, CHNO, active against several DNA and RNA viruses. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ribavirin (Thesaurus) ribat ribband Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language