51Թ

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View synonyms for

thermionic tube

noun

Electronics.
  1. a vacuum tube in which the cathode is heated electrically to cause the emission of electrons by thermal agitation.

thermionic tube

/ ٳûī-ŏ′ĭ /

  1. 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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51Թ History and Origins

Origin of thermionic tube1

First recorded in 1925–30

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