ultraviolet
adjective
- pertaining to a band of electromagnetic radiation having wavelengths (from c. 5 to c. 400 nanometers) that are shorter than violet light
- of, pertaining to, or producing radiation of such wavelengths
noun
ultraviolet radiation
See ultraviolet in American Heritage Dictionary 4
(ŭlˌtrə-vīˈə-lĭt)
adjective Abbr. UV Of or relating to the range of invisible radiation wavelengths from about 4 nanometers, on the border of the x-ray region, to about 380 nanometers, just beyond the violet in the visible spectrum.
noun Ultraviolet light or the ultraviolet part of the spectrum.
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