1. ultraviolet

noun. (ˌəltrəˈvaɪəlɪt) Radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays.
Synonyms
sunray actinic radiation ultraviolet light ultraviolet illumination ultraviolet radiation actinic ray UV sun-ray
Antonyms
inconspicuousness conspicuous panoptical microscopic microscopical
Etymology
ultraviolet (English)
ultra- (English)
violet (English)
violette (Old French (842-ca. 1400))
viola (Latin)

2. ultraviolet

adjective. (ˌəltrəˈvaɪəlɪt) Having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end.
Synonyms
unseeable invisible
Antonyms
visible overt perceptible
Etymology
ultraviolet (English)
ultra- (English)
violet (English)
violette (Old French (842-ca. 1400))
viola (Latin)
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