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May 27, 2012
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Dictionary


op•tics



Pronunciation: (op'tiks), [key]
—n. (used with a sing. v.)
the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision.

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

optic nerveoptimal
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