photocathode

noun pho·to·cath·ode \-ˈka-ˌthōd\

Definition of PHOTOCATHODE

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

International Scientific Vocabulary

First Known Use: 1930

Medical Dictionary

noun pho·to·cath·ode \-ˈkath-ˌōd\

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

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