ultraviolet

adjective

UK /ˌʌl.trəˈvaɪə.lət/

US /ˌʌl.trəˈvaɪə.lət/

Ultraviolet light is a kind of light you cannot see that comes from the sun.

The sunscreen protects your skin from ultraviolet rays.

SYNONYMS

UV actinic shortwave sunburning

RELATED WORDS

sunlight radiation sunscreen wavelength ozone

OTHER MEANINGS

2. A type of invisible light with short wavelengths, beyond the violet end of the visible spectrum.

Ultraviolet is used in some lamps to kill germs.

3. Relating to or using light of this kind.

The scientist used an ultraviolet camera to study the flowers.

4. A color or region of the spectrum just beyond violet.

The poster showed the rainbow fading into ultraviolet at the edge.