Definition

A device or surface that reflects light back to its source, making it useful for visibility in low-light conditions.

Example

The road signs are equipped with retroreflectors to ensure they are visible at night.

Conversation

Have you ever seen a retroreflector in action?

No, I haven't! What exactly does it do?

It helps reflect light back to its source, even at angles.

That sounds really cool! I need to check one out.

Synonyms & Antonyms

Root Explanation

Retroreflector → It is formed from "retro-" (meaning backward) and "reflector" (from Latin "reflectere", meaning to bend back). A retroreflector is a device that reflects light or other waves back to the source, hence the combination of bending light back.

Memory Tip

Think of light being 'bent back' ('reflector') and going 'backward' ('retro-') — that's what a retroreflector does.

Visually Confused Words