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May 27, 2012
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Dictionary


pho•to•neg•a•tive



Pronunciation: (fō"tu-neg'u-tiv), [key]
—adj. Physics.
pertaining to a substance, as selenium, having a conductivity that decreases upon absorption of electromagnetic radiation.

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

photonphotoneutron
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