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cold cathode

noun

, Electronics.
  1. a cathode, in an electron tube cold-cathodetube or lamp, that emits electrons without having to be heated.


cold cathode

noun

  1. electronics a cathode from which electrons are emitted at ambient temperature, due to a high potential gradient at the surface
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of cold cathode1

First recorded in 1925–30

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