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Adjective: infrared  ,in-fru'red
  1. 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: infrared  ,in-fru'red
  1. The infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
    "they could sense radiation in the infrared";
    - infrared frequency
  2. Electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
    - infrared light, infrared radiation, infrared emission

Derived forms: infrareds

See also: invisible, unseeable

Type of: actinic radiation, actinic ray, frequence, frequency, oftenness

Part of: infrared spectrum

Encyclopedia: Infrared