ultraviolet
ul-tra-vi-o-let
noun
Electromagnetic radiation with wavelengths shorter than visible violet light.
"Too much ultraviolet can damage your skin."
adjective
Relating to electromagnetic radiation beyond the violet end of the visible spectrum.
"Wear sunglasses to protect your eyes from ultraviolet light."
Thesaurus
Synonyms: unseeable, invisible, UV, ultraviolet radiation, ultraviolet illumination, ultraviolet light