/ Dictionary / Index D diflunisal: Meaning and Definition of Find definitions for: di•flu•ni•sal Pronunciation: (di-fl'nu-sal"), [key] — n. Pharm. a substance, CHFO, used as an analgesic, antipyretic, and anti-inflammatory drug in the treatment of rheumatoid diseases and other musculoskeletal disorders. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diflunisal (Thesaurus) difluence dig Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language