photoresistor

Science Dictionary
photoresistor   (fō'tō-rĭ-zĭs'tər)  Pronunciation Key 
A resistor whose resistance varies as a function of the intensity of light it is exposed to. Also called photocell. See also photoelectric.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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