/ Dictionary / Index E Essonne: Meaning and Definition of Find definitions for: Es•sonne Pronunciation: (e-sôn'), [key] — n. a department in N France. 923,061; 699 sq. mi. (1810 sq. km). Cap.: Évry. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. essonite EST Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language