| Noun | 1. | CRT - a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen computer, computing device, computing machine, data processor, electronic computer, information processing system - a machine for performing calculations automatically Crookes tube - the original gas-discharge cathode-ray tube electron gun - the electrode that is the source of electrons in a cathode-ray tube or electron microscope; consists of a cathode that emits a stream of electrons and the electrostatic or electromagnetic apparatus that focuses it gas-discharge tube - a tube in which an electric discharge takes place through a gas kinescope, picture tube, television tube - a cathode-ray tube in a television receiver; translates the received signal into a picture on a luminescent screen cathode-ray oscilloscope, CRO, oscilloscope, scope - electronic equipment that provides visual images of varying electrical quantities CRT screen, screen - the display that is electronically created on the surface of the large end of a cathode-ray tube television system, television - a telecommunication system that transmits images of objects (stationary or moving) between distant points |