Adjacent Words

ultraviolet radiation definitions

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WordNet (r) 3.0 (2005)

n
1: radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays [syn: ultraviolet, ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV]

NOAA Weather Glossary

The energy range just beyond the violet end of thevisible spectrum. Although ultraviolet radiation constitutes only about 5 percent of thetotal energy emitted from the sun, it is the major energy source for the stratosphere andmesosphere, playing a dominant role in both energy balance and chemical composition.