electron gun: Meaning and Definition of

elec'tron gun"

Pronunciation: [key]
— Electronics, Television. Electronics,Television.
  1. a device consisting of the cathode ray tube, which emits electrons, and a surrounding electrostatic or electromagnetic apparatus, which controls, focuses, and accelerates the stream of electrons
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.