Meaning of INFRARED RADIATION

WordNet Dictionary
	Definition:		[n]  electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
	Synonyms:		infrared, infrared emission, infrared light
	See Also:		actinic radiation, actinic ray
Biology Dictionary
	Definition:		Electromagnetic radiation with wavelengths between 750 nanometers and 1,000,000 nanometers (or 1 millimeter). This is more commonly known as heat energy.