/ Dictionary / Index E existence: Meaning and Definition of Find definitions for: ex•ist•ence Pronunciation: (ig-zis'tuns), [key] — n. the state or fact of existing; being. continuance in being or life; life: a struggle for existence. mode of existing: They were working for a better existence. all that exists: Existence shows a universal order. something that exists; entity; being. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: existence (Thesaurus) exist existence theorem 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