/ Dictionary / Index P post factum: Meaning and Definition of Find definitions for: post fac•tum Pronunciation: (pōst fak'tum), [key] after the fact; ex post facto: She will announce her decision and then give us a post factum statement of the reasons for it. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. postexilic postfeminist Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language