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visual pigment

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Medical Dictionary

visual pigment n.
Any of the photopigments in the retinal cones and rods that absorb light and photochemically initiate the phenomenon of vision.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia

visual pigment

any of a number of related substances that function in light reception by animals by transforming light energy into electrical (nerve) potentials

Learn more about visual pigment with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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