Definition of photochromic
1 : capable of changing color on exposure to radiant energy (such as light) photochromic glass
2 : of, relating to, or utilizing the change of color shown by a photochromic substance a photochromic process
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Recent Examples of photochromic from the Web
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Other photochromic chemicals are used to make sunglasses that darken when they are taken outside — into bright sunlight.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'photochromic'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of photochromic
phot- + chrom- + 1-ic
First Known Use: 1881
Medical Dictionary
Medical Definition of photochromic
1: capable of changing color on exposure to radiant energy (as light) eyeglasses with photochromic lenses
2: of, relating to, or utilizing the change of color shown by a photochromic substance a photochromic process
photochromic
Medical Definition of photochromic
: a photochromic substance—usually used in plural
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