Infrared (adjective)

1. Relating to or denoting a type of electromagnetic wave having a wavelength just greater than that of the red end of the visible spectrum but less than that of microwaves.
2. Relating to or denoting a device or technology that detects or emits infrared radiation.

Origin:

Early 19th century: from latin infra "below" + the scientific term radiatus "radiating".

Examples:

1. An infrared camera can detect heat signatures in the dark.
2. Infrared radiation is used in remote controls.
3. The telescope can detect infrared light from distant stars.
4. The room is equipped with infrared heating.
5. Infrared technology is used in medical imaging to detect inflammation and other conditions.