Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps


Noun: ultraviolet  ,úl-tru'vI-u-lut
  1. Radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
    - ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV
Adjective: ultraviolet  ,úl-tru'vI-u-lut
  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"

Derived forms: ultraviolets

See also: invisible, unseeable

Type of: actinic radiation, actinic ray

Encyclopedia: Ultraviolet