Ultraviolet - Definition
ultraviolet
adj 1: 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"
n 1: radiation lying in the ultraviolet range; wave lengths
shorter than light but longer than X rays [syn:
ultraviolet, ultraviolet radiation, ultraviolet
light, ultraviolet illumination, UV]