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View synonyms for thermionic tube
thermionic tube
noun
, Electronics.
- a vacuum tube in which the cathode is heated electrically to cause the emission of electrons by thermal agitation.
thermionic tube
/ thûr′mī-ŏn′ĭk /
- An electrical component, typically an electron tube, through which electric current flows via the emission of thermions from a heated cathode.
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Word History and Origins
Origin of thermionic tube1
First recorded in 1925–30
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