photo-diode

Science Dictionary
photodiode   (fō'tō-dī'ōd')  Pronunciation Key 
A diode that exhibits sensitivity to light, either by varying its electrical resistance like a photoresistor, or generating a electric potential in the manner of a photoelectric cell. See more at photoelectric.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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