/ Dictionary / Index R reopener: Meaning and Definition of Find definitions for: re•o•pen•er Pronunciation: (rē-ō'pu-nur), [key] — n. Informal. an act or instance of reopening negotiations, as on the provisions of a contract. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. reopen reorder Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language