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pho·to·chro·mic
 photochromic
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- pronunciation:
- fo
to
kra
mihk
- features:
- Word Parts
| part of speech: |
adjective |
| definition: |
designating a transparent material such as specially treated glass or film that turns dark when exposed to light and returns to normal when the light is removed.
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| derivation: |
photochromism (n.) |
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