Definitions
Light with wavelengths just shorter than visible violet.
Word origin
From ultra- (“beyond”) + violet (“violet”).
Used in a sentence
“A one-loop Feynman graph that represents a virtual process. In the limit in which the virtual process involves short distances or high momenta, one may find an ultraviolet divergence in the corresponding amplitude.”
“Some have advocated the search for a new theory of quantum gravity, a theory which does not suffer from ultraviolet infinity problems.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Beyond purple”11 letters
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