Definition, Meaning & Synonyms

photochromic

Adjective

foh-tuh-kroh-mik

Definition

A photochromic material is one that changes color or transparency when exposed to light, particularly ultraviolet (UV) light.

Examples

Photochromic lenses darken when exposed to sunlight, providing better protection for your eyes.
The photochromic ink used in some security tags changes color under UV light.

Meaning

Photochromic refers to substances that can alter their state in response to light exposure, making them useful in various applications, such as lenses that darken in bright sunlight.