/ Dictionary / Index T twenty-five: Meaning and Definition of Find definitions for: twen•ty-five Pronunciation: (twen'tē-fīv', twun'-), [key] — n. a cardinal number, 20 plus 5. a symbol for this number, as 25 or XXV. a set of this many persons or things. —adj. amounting to 25 in number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: twenty-five (Thesaurus) Twenty-first Amendment twentyfold Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language