noun
- the property of a substance that changes color when exposed to light and returns to its original color when the light is removed
Usage: technical; chemistry
Examples
- Photochromism is the principle behind transition lenses that darken in sunlight.
- The scientist studied photochromism in organic compounds to develop new smart materials.
- Photochromic sunglasses rely on photochromism to automatically adjust their tint.
- The reversible nature of photochromism makes it useful for optical applications.
- Researchers are exploring photochromism for use in data storage and display technologies.