infrared

Definition

• n. the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
• n. electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
• adj. having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end

Word forms

Plural

infrareds

Example sentences

1. a.

   The infrared camera can detect heat emitted by objects in the dark.

2. n.

   Infrared is often used in remote controls for televisions.