/ Dictionary / Index D dapsone: Meaning and Definition of Find definitions for: dap•sone Pronunciation: (dap'sōn), [key] — n. Pharm. an antibacterial substance, CHNOS, used to treat leprosy and certain forms of dermatitis. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dapsone (Thesaurus) Dapsang DAR 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