/ Dictionary / Index E em dash: Meaning and Definition of Find definitions for: em' dash" Pronunciation: [key] — Print. Print. a dash one em long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. emcee Emden Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language