photocathode

noun
pho·​to·​cath·​ode | \ ˌfō-tō-ˈka-ˌthōd How to pronounce photocathode (audio) \

Definition of photocathode

: a cathode that emits electrons when exposed to radiant energy and especially light

First Known Use of photocathode

1930, in the meaning defined above

History and Etymology for photocathode

International Scientific Vocabulary

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The first known use of photocathode was in 1930

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Cite this Entry

“Photocathode.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photocathode. Accessed 26 Oct. 2020.

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More Definitions for photocathode

photocathode

noun
pho·​to·​cath·​ode | \ -ˈkath-ˌōd How to pronounce photocathode (audio) \

Medical Definition of photocathode

: a cathode (as in a photoelectric cell) that emits electrons when exposed to light or other radiation

More from Merriam-Webster on photocathode

Britannica.com: Encyclopedia article about photocathode

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