/ Dictionary / Index D desulfurize: Meaning and Definition of Find definitions for: de•sul•fu•rize Pronunciation: (dē-sul'fyu-rīz", -fu-), [key] — -rized, -riz•ing. to free from sulfur. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: desulfurize (Thesaurus) desulfurate desultory Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language