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
Sunlight is composed of near-infrared light (which is invisible and accounts for 50% of sunlight); visible light (which includes red light); and ultraviolet light.
—
Jamie Friedlander Serrano, TIME, 13 Aug. 2024
As the first events approached, organizers had hoped for clear, sunny weather to reduce overall pollution and allow ultraviolet light to inactivate some bacteria.
—Evan Bush, NBC News, 31 July 2024
During the day, ultraviolet light from the sun can break up molecules in the upper atmosphere of Venus.
—Jacopo Prisco, CNN, 29 July 2024
These flashes are a result of the immense energy released during the flare and exist primarily in the form of X-rays and ultraviolet light.
—Max Bennett, Discover Magazine, 23 July 2024
See all Example Sentences for ultraviolet 
Jamie Friedlander Serrano, TIME, 13 Aug. 2024
As the first events approached, organizers had hoped for clear, sunny weather to reduce overall pollution and allow ultraviolet light to inactivate some bacteria.
—Evan Bush, NBC News, 31 July 2024
During the day, ultraviolet light from the sun can break up molecules in the upper atmosphere of Venus.
—Jacopo Prisco, CNN, 29 July 2024
These flashes are a result of the immense energy released during the flare and exist primarily in the form of X-rays and ultraviolet light.
—Max Bennett, Discover Magazine, 23 July 2024
See all Example Sentences for ultraviolet
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ultraviolet.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Ultraviolet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultraviolet. Accessed 22 Aug. 2024.
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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