cold cathode

noun

Definition of cold cathode

: a cathode in an electron tube or fluorescent lamp that is unheated and that emits electrons when bombarded by ions or subjected to light, infrared, or ultraviolet rays cold-cathode tube

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Cite this Entry

“Cold cathode.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cold%20cathode. Accessed 27 Nov. 2021.

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