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photochromism
Variant of photochromic
adjective
designating or of a material, as certain glass or film, which turns dark when exposed to light and returns to its normal transparency with the removal of the light source
Related Forms:
- photochromism noun
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.