/ Dictionary / Index F fifty-seven: Meaning and Definition of Find definitions for: fif•ty-sev•en Pronunciation: (fif'tē-sev'un), [key] — n. a cardinal number, 50 plus 7. a symbol for this number, as 57 or LVII. a set of this many persons or things. —adj. amounting to 57 in number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fifty-seven (Thesaurus) fifty-second fifty-seventh Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language