thermionic valve

noun
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
Hypernyms: ↑electronic device
Hyponyms:
Part Holonyms: ↑circuit, ↑electrical circuit, ↑electric circuit
Part Meronyms: ↑anode, ↑cathode, ↑electrode, ↑grid, ↑control grid, ↑plate

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Brit.
[1915-20]

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thermionic valve or thermionic tube noun
A vacuum tube containing a heated cathode from which electrons are emitted, an anode for collecting some or all of these electrons and, generally, additional electrodes for controlling their flow to the anode
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Main Entry:thermion

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thermionic valve,
Especially British. vacuum tube.

Useful english dictionary. 2012.

Look at other dictionaries:

  • thermionic valve — (US thermionic tube) noun Electronics a vacuum tube giving a flow of thermionic electrons in one direction, used especially in the rectification of a current and in radio reception …   English new terms dictionary

  • thermionic valve — /θɜmiˌɒnɪk ˈvælv/ (say thermee.onik valv) noun a radio valve which contains a heated cathode …   Australian English dictionary

  • thermionic valve — Brit. See vacuum tube. [1915 20] * * * …   Universalium

  • thermionic tube — n. an electron tube having a cathode electrically heated in order to cause electron or ion emission: Also [Brit., etc.] Brit. thermionic valve …   English World dictionary

  • thermionic tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑electron tube, ↑thermionic valve • Hypernyms: ↑electronic device …   Useful english dictionary

  • thermionic vacuum tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic tube, ↑electron tube, ↑thermionic valve • Hypernyms: ↑electronic device …   Useful english dictionary

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  • thermionic — adj. of or relating to electrons emitted from a substance at very high temperature. Phrases and idioms: thermionic emission the emission of electrons from a heated source. thermionic valve (US tube) a device giving a flow of thermionic electrons… …   Useful english dictionary

  • thermionic — adjective concerning the emission of electrons from a heated electrode See Also: thermion, thermionic valve …   Wiktionary

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