/ Dictionary / Index E electron multiplier: Meaning and Definition of Find definitions for: elec'tron mul"tiplier Pronunciation: [key] — Electronics. Electronics. a vacuum tube containing a number of dynodes that serve to amplify the flow of electrons from the cathode by means of secondary emission. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. electron microscope electron-neutrino Related Content Daily Word Quiz: leonine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language