infrared meaning and definition

INFRARED noun

Definition of infrared (noun)

1. the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
   • "they could sense radiation in the infrared"
   • synonyms: infrared frequency
2. electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
   • synonyms: infrared emission, infrared light, infrared radiation

INFRARED adjective

Definition of infrared (adjective)

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"