noun
radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays (Freq. 1)
• Syn: ↑ultraviolet, ↑ultraviolet radiation, ↑ultraviolet light, ↑UV
• Derivationally related forms: ↑ultraviolet (for: ↑ultraviolet)
• Hypernyms: ↑actinic radiation, ↑actinic ray
Useful english dictionary. 2012.