- 1. ultraviolet, ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV, actinic radiation, actinic ray
- usage: radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
WordNet 3.0 Copyright © 2006 by Princeton University.
- 1. ultraviolet, invisible (vs. visible), unseeable
- usage: 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"
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See also: ultraviolet (Dictionary)