/ Dictionary / Index S sulfathiazole: Meaning and Definition of Find definitions for: sul•fa•thi•a•zole Pronunciation: (sul"fu-thī'u-zōl"), [key] — n. Pharm. a sulfanilamide derivative, CHNOS, formerly used in the treatment of pneumonia and staphylococcal infections, but now largely replaced because of its toxicity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sulfate pulp sulfatize Related Content Daily Word Quiz: divulge Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language