of or pertaining to an organism that avoids light.

1855–60; photo- + -phobic Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
photophobia (ˌfəʊtəʊˈfəʊbɪə)
1.  pathol abnormal sensitivity of the eyes to light, esp as the result of inflammation
2.  psychiatry abnormal fear of or aversion to sunlight or well-lit places

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

photophobic pho·to·pho·bic (fō'tə-fō'bĭk)

  1. Exhibiting photophobia.

  2. Avoiding light.

  3. Growing best in the absence of light.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
She was photophobic with transient limitation of vision in the left visual field.
Individuals are only found in shaded areas on the undersides of cobbles and boulders, and they appear to be photophobic.
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