/ Dictionary / Index S Superfortress: Meaning and Definition of Find definitions for: Su•per•for•tress Pronunciation: (s'pur-fôr"tris), [key] — n. U.S. Mil. a heavy, long-range, four-engined bomber used during World War II. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. superfluous superfund Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language