Dictionary

1. (

• infrared ,
• infrared_frequency

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

2. (

• infrared ,
• infrared_light ,
• infrared_radiation ,
• infrared_emission

) electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves ;

1. (

• infrared

) 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" ;