ultraviolet

¹ul·tra·vi·o·let

adj \ˌəl-trə-ˈvī-(ə-)lət\

Definition of ULTRAVIOLET

1

: situated beyond the visible spectrum at its violet end—used of radiation having a wavelength shorter than wavelengths of visible light and longer than those of X-rays

2

: relating to, producing, or employing ultraviolet radiation