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photodetector

[foh-toh-di-tek-ter]
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noun
  1. photosensor.
  2. Electronics. any device, as a photodiode, phototube, or photovoltaic cell, that uses the photoelectric effect to convert radiant energy into an electrical signal.
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Origin of photodetector

First recorded in 1945–50; photo- + detector
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018