What is the meaning of electron tube?

Electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope.
- synonyms: tube, vacuum tube, thermionic vacuum tube, thermionic tube, thermionic valve

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APA	WordNet. (2010). electron tube. Retrieved September 21, 2026, from http://smartdefine.org/electron_tube/definitions/1272535
Chicago	WordNet. 2010. "electron tube" http://smartdefine.org/electron_tube/definitions/1272535 (accessed September 21, 2026).
Harvard	WordNet 2010, electron tube, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/electron_tube/definitions/1272535>.
MLA	WordNet. "electron tube" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/electron_tube/definitions/1272535>

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