"ultraviolet" in the noun sense
1. ultraviolet, ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV
radiation lying in the ultraviolet range wave lengths shorter than light but longer than X rays
"ultraviolet" in the adjective sense
1. ultraviolet
having or employing wavelengths shorter than light but longer than X-rays lying outside the visible spectrum at its violet end
"ultraviolet radiation"
"an ultraviolet lamp"
Source: WordNet® (An amazing lexical database of English)
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