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Electron tube
noun
Definitions
Noun
- 1 Any of several electronic devices that control electron current through vacuum, gas or vapor between electrodes within a sealed container, usually of glass or metal and often designed to be easily installed in and removed from the equipment in which it is used.
- 2 electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope wordnet
See also for "electron tube"
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