Définitions
1.NounThe electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm.
2.NounA specific wavelength in this range.
3.NounA device that emits infrared radiation.
4.AdjectiveHaving a wavelength in the infrared spectrum.
5.AdjectiveRelating to very low energies or very large distances or time spans.