infrared
The electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 and 1 mm.
Other meanings
A specific wavelength in this range.
A device that emits infrared radiation.
Example sentences
Where this comes from
This definition is adapted from “infrared” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above, published under CC BY-SA 4.0. This page is published under the same licence.