/ Dictionary / Index P perforce: Meaning and Definition of Find definitions for: per•force Pronunciation: (pur-fôrs', -fōrs'), [key] — adv. of necessity; necessarily; by force of circumstance: The story must perforce be true. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: perforce (Thesaurus) perforation gauge perform Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language