Hypertext Webster Gateway: "ultraviolet"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Ultraviolet \Ul`tra*vi"o*let\, a. [Pref. ultra- + violet.]
(Physics)
Lying outside the visible spectrum at its violet end; -- said
of rays more refrangible than the extreme violet rays of the
spectrum.
From WordNet (r) 1.7 (wn)
ultraviolet
adj : 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"
n : radiation lying in the ultraviolet range; wave lengths
shorter than light but longer than X rays [syn: {ultraviolet
radiation}, {ultraviolet light}, {ultraviolet
illumination}, {UV}]
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