Definition of infra-red

noun : infra-red

Source: WordNet 3.1

  • 1. (

    ) the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared" ;

Adjective : infra-red

Source: WordNet 3.1

  • 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" ;


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