ultraviolet
adjective
ul·tra·vi·o·let
ˌəl-trə-ˈvī-(ə-)lət 
1
: situated beyond the visible spectrum at its violet end
—used of radiation having a wavelength shorter than wavelengths of visible light and longer than those of X-rays
2
: relating to, producing, or employing ultraviolet radiation
ultraviolet
noun
Examples of ultraviolet in a Sentence
Recent Examples on the Web
Normal disinfectants and ultraviolet light are enough to kill the virus, said Erik Hill, a virologist at Seton Hall University.
—
Devi Shastri, Chicago Tribune, 13 May 2026
The breakthrough came when the structure was exposed to ultraviolet light.
—Neetika Walter, Interesting Engineering, 12 May 2026
These blackouts occur when intense X-ray and ultraviolet radiation from solar flares ionize Earth's upper atmosphere, interfering with high-frequency radio signals used by aviators, mariners and amateur radio operators.
—Daisy Dobrijevic, Space.com, 11 May 2026
One pitch was an equipment financing deal from the the company's customers related to ultraviolet lithography machines, the news agency reported.
—Tobias Burns, CNBC, 8 May 2026
See All Example Sentences for ultraviolet
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Devi Shastri, Chicago Tribune, 13 May 2026
The breakthrough came when the structure was exposed to ultraviolet light.
—Neetika Walter, Interesting Engineering, 12 May 2026
These blackouts occur when intense X-ray and ultraviolet radiation from solar flares ionize Earth's upper atmosphere, interfering with high-frequency radio signals used by aviators, mariners and amateur radio operators.
—Daisy Dobrijevic, Space.com, 11 May 2026
One pitch was an equipment financing deal from the the company's customers related to ultraviolet lithography machines, the news agency reported.
—Tobias Burns, CNBC, 8 May 2026
See All Example Sentences for ultraviolet
Cite this Entry
“Ultraviolet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultraviolet. Accessed 21 May. 2026.
Copy CitationKids Definition
ultraviolet
adjective
ul·tra·vi·o·let
ˌəl-trə-ˈvī-ə-lət
1
: located beyond the visible spectrum at its violet end and having a wavelength shorter than those of visible light but longer than those of X-rays
2
: relating to, producing, or using ultraviolet radiation
ultraviolet
noun
Medical Definition
ultraviolet
1 of 2 adjective
ul·tra·vi·o·let
ˌəl-trə-ˈvī-(ə-)lət
1
: situated beyond the visible spectrum at its violet end
—used of radiation having a wavelength shorter than wavelengths of visible light and longer than those of X-rays
2
: relating to, producing, or employing ultraviolet radiation
ultraviolet
2 of 2 noun
: ultraviolet radiation
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