cold cathode


nounElectronics.
  1. a cathode, in an electron tube (cold-cathode tube ) or lamp, that emits electrons without having to be heated.

Origin of cold cathode

1
First recorded in 1925–30

Words Nearby cold cathode

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British Dictionary definitions for cold cathode

cold cathode

noun
  1. electronics a cathode from which electrons are emitted at ambient temperature, due to a high potential gradient at the surface

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