/ Dictionary / Index S seventy-seven: Meaning and Definition of Find definitions for: sev•en•ty-sev•en Pronunciation: (sev'un-tē-sev'un), [key] — n. a cardinal number, 70 plus 7. a symbol for this number, as 77 or LXXVII. a set of this many persons or things. —adj. amounting to 77 in number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: seventy-seven (Thesaurus) seventy-second seventy-seventh 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