/ Dictionary / Index F fuming sulfuric acid: Meaning and Definition of Find definitions for: fum'ing sulfu'ric ac'id. Pronunciation: [key] See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fuming nitric acid fumitory Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language