Definition of cathode ray tube noun from the Oxford Advanced Learner's Dictionary


cathode ray tube

BrE BrE//ˌkæθəʊd ˈreɪ tjuːb//
; NAmE NAmE//ˌkæθoʊd ˈreɪ tuːb//
Watching TV
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a vacuum tube which was used in the past inside a television or computer screen, etc. from which a stream of electrons produced images on the screen See related entries: Watching TV
See the Oxford Advanced American Dictionary entry: cathode ray tube