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CRT abbreviation of "cathode-ray tube," a vacuum tube in which a stream of electrons is accelerated and focused in a beam that produces lighted traces on a screen at one end of the tube, used in television sets, computer monitors, and the like.
kinescope a cathode-ray tube that directs a beam of electrons to reproduce a transmitted picture on a luminescent screen; picture tube. [1/3 definitions]
picture tube the cathode-ray tube in a television receiver, with a screen at one end on which televised images appear.