/ Dictionary / Index S supersedure: Meaning and Definition of Find definitions for: su•per•se•dure Pronunciation: (s"pur-sē'jur), [key] — n. supersession. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: supersedure (Thesaurus) supersedeas superseniority Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language