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The detection, absorption, and use of light, as for vision in animals or phototropism and photosynthesis in plants.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
photoreception(fō″tō-rē-sĕp′shŭn) [″ + L. recipere, to receive]
The perception of light rays in the visible light spectrum.
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