photocathode

noun

pho·​to·​cath·​ode ˌfō-tō-ˈka-ˌthōd How to pronounce photocathode (audio)
: a cathode that emits electrons when exposed to radiant energy and especially light

Word History

Etymology

International Scientific Vocabulary

First Known Use

1930, in the meaning defined above

Time Traveler
The first known use of photocathode was in 1930

Dictionary Entries Near photocathode

Cite this Entry

“Photocathode.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photocathode. Accessed 29 Jan. 2023.

Medical Definition

photocathode

noun
pho·​to·​cath·​ode -ˈkath-ˌōd How to pronounce photocathode (audio)
: a cathode (as in a photoelectric cell) that emits electrons when exposed to light or other radiation

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