Definition

Relating to a substance that can change color when exposed to light.

Example

The photochromic lenses in my glasses darken when I go outside.

Conversation

Have you seen those new glasses that are photochromic?

Yeah, I heard they change color when you go outside!

Exactly! It's so cool how they adjust to the light.

I want a pair; they sound really convenient for driving.

Synonyms & Antonyms

Root Explanation

Photochromic → It is formed from "photo-" (from Greek "phōs", meaning light) and "chromic" (from Greek "chroma", meaning color). The word describes a material that changes color in response to light.

Memory Tip

Think of 'light' ('photo-') causing a change in 'color' ('chromic') — that's why photochromic refers to something that changes color when exposed to light.

Visually Confused Words