Definition

Referring to a wavelength of light that is longer than that of red light, typically not visible to the human eye.

Example

The ultrared light emitted by the device is used for night vision.

Conversation

Have you heard about the ultrared light therapy that's trending now?

Yeah, I read that it can help with skin healing and pain relief.

It sounds interesting, but I wonder how ultrared light works exactly.

I think it operates beyond the visible spectrum, which makes it quite unique!

Synonyms & Antonyms

Root Explanation

Ultrared is formed from "ultra-" (meaning beyond) and "red" (referring to the color red). The word describes a color that is beyond the visible spectrum of red light.

Memory Tip

Think of 'beyond' ('ultra-') the normal color of 'red' — that's what ultrared means.

Visually Confused Words