/ Dictionary / Index S seventy-three: Meaning and Definition of Find definitions for: sev•en•ty-three Pronunciation: (sev'un-tē-thrē'), [key] — n. a cardinal number, 70 plus 3. a symbol for this number, as 73 or LXXIII. a set of this many persons or things. —adj. amounting to 73 in number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: seventy-three (Thesaurus) seventy-third seventy-two Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language