having to do with ultraviolet rays, the invisible rays present in sunlight.
having to do with certain rays of light that are beyond violet in the
spectrum and cannot be seen. They are present in sunlight and light from sunlamps, and are used for
healing, forming
vitamins and as sterilizers and disinfectants.
having to do with certain rays of light that cannot be seen. They are present in sunlight and light from sunlamps, and are used for
healing, forming
vitamins and as sterilizers and disinfectants.
pertaining to a
band of
radiation having wavelengths that are shorter than violet light.