ULTRAVIOLET RADIATION

WordNet Dictionary

	Definition:	[n] radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays

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	Synonyms:	ultraviolet, ultraviolet illumination, ultraviolet light, UV

	See Also:	actinic radiation, actinic ray

Medical Dictionary

	Definition:	invisible rays that come from the sun. UV radiation can damage the skin and cause melanoma and other types of skin cancer.

Biology Dictionary

	Definition:	Electromagnetic radiation with wavelengths between 200 nanometers and 400 nanometers. Exposure to excessive UV radiation damages DNA and can cause health problems such as skin cancer and cataracts in the eyes.