Etymology
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UV

abbreviation of ultraviolet, by 1928.

updated on October 27, 2010

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Definitions of UV from WordNet

uv (n.)
radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays;
Synonyms: ultraviolet / ultraviolet radiation / ultraviolet light / ultraviolet illumination
From wordnet.princeton.edu, not affiliated with etymonline.