/ Dictionary / Index E ephemera: Meaning and Definition of Find definitions for: e•phem•er•a Pronunciation: (i-fem'ur-u), [key] — pl. -er•as, -er•ae a pl. of an ephemerid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ephemera (Thesaurus) ephedrine ephemeral Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language