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Definition of photoelectric cell noun from the Oxford Advanced Learner's Dictionary

photoelectric cell

noun
 
/ˌfəʊtəʊɪˌlektrɪk ˈsel/
 
/ˌfəʊtəʊɪˌlektrɪk ˈsel/
(also photocell)
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  1. an electric device that uses a stream of light. When the stream is broken it shows that somebody/something is present, and can be used to control alarms, machines, etc.Topics Engineeringc2
See photoelectric cell in the Oxford Advanced American Dictionary
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