'Infrared' definitions:
Definition of 'infrared'
From: WordNet
adjective
Having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end; "infrared radiation"; "infrared photography"
noun
The infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared" [syn: infrared, infrared frequency]
noun
Electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves [syn: infrared, infrared light, infrared radiation, infrared emission]
Definition of 'Infrared'
From: GCIDE
- Infrared \In`fra*red"\, Infra-red \In`fra-red"\, a. [Infra- + red.]
- 1. (Physics) Lying outside the visible spectrum at its red end; -- said of rays having a longer wavelength (and thus less refrangible) than the extreme red rays, specifically those electromagnetic waves having a wavelength of between
- 700 nanometers and 1 millimeter. [Webster 1913 Suppl. +PJC]
- 2. relating to, using, or producing infrared radiation. [PJC]
- 3. affected by infrared radiation; as, infrared detector; infrared film. [PJC]