ultraviolet(radiation with wavelengths from 380 nanometre - 10 nanometre) adjective [UK: ˌʌl.trə.ˈvaɪə.lət] [US: ˌʌl.trə.ˈvaɪə.lət]Ultraviolet rays are harmful to us. = Los rayos ultravioleta son dañinos para nosotros.
luz ultravioletanoun {f}
ultraviolet light(light in the ultraviolet part of the spectrum) noun