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
More:Peak northern lights activity coming soon: What to know as sun reaches solar maximum
Solar flares emit radiation, mostly in the form of ultraviolet light and X-rays, that can hurtle toward Earth at the speed of light.
—
Max Hauptman, USA TODAY, 17 Oct. 2024
Solar flares emit radiation, mostly in the form of ultraviolet light and X-rays, that can hurtle toward Earth at the speed of light.
—Perry Vandell, The Arizona Republic, 4 Oct. 2024
The spacecraft, whose main body is a box about 20 ft. to a side, is stuffed with a suite of nine instruments, including optical cameras, temperature sensors, global radar, a magnetometer, and an ultraviolet spectrometer.
—Jeffrey Kluger, TIME, 4 Oct. 2024
Outside of the protective bubble of Earth’s atmosphere the cask was exposed to far more ultraviolet rays than a standard barrel would experience.
—Mark Littler, Forbes, 26 Sep. 2024
See all Example Sentences for ultraviolet 
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Max Hauptman, USA TODAY, 17 Oct. 2024
Solar flares emit radiation, mostly in the form of ultraviolet light and X-rays, that can hurtle toward Earth at the speed of light.
—Perry Vandell, The Arizona Republic, 4 Oct. 2024
The spacecraft, whose main body is a box about 20 ft. to a side, is stuffed with a suite of nine instruments, including optical cameras, temperature sensors, global radar, a magnetometer, and an ultraviolet spectrometer.
—Jeffrey Kluger, TIME, 4 Oct. 2024
Outside of the protective bubble of Earth’s atmosphere the cask was exposed to far more ultraviolet rays than a standard barrel would experience.
—Mark Littler, Forbes, 26 Sep. 2024
See all Example Sentences for ultraviolet
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Dictionary Entries Near ultraviolet
Cite this Entry
“Ultraviolet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultraviolet. Accessed 6 Nov. 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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