Pronunciation: (fō'tō-sel"), [key]
n. Electronics.
a solid-state device that converts light into electrical energy by producing a voltage, as in a photovoltaic cell, or uses light to regulate the flow of current, as in a photoconductive cell: used in automatic control systems for doors, lighting, etc. Also called electric eye, photoelectric cell.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

photocathodephotochemical smog
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