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
The Hubble observations were made in visible and ultraviolet light.
—
Ashley Strickland, CNN, 11 Oct. 2024
Melanin and Other Pigmentation Roles Melanin in the skin helps protect against ultraviolet A (UVA), ultraviolet B (UVB), and visible blue light.
—Heather Jones, Verywell Health, 1 Aug. 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.
—Eric Lagatta, USA TODAY, 1 Nov. 2024
While your first inclination may be to dismiss it as a marketing ploy, the experiment was effective for the purposes of exploring the effects of space on whiskey thanks to the changes in temperature, humidity and ultraviolet radiation experienced at these heights.
—Mark Littler, Forbes, 26 Sep. 2024
See all Example Sentences for ultraviolet 
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Ashley Strickland, CNN, 11 Oct. 2024
Melanin and Other Pigmentation Roles Melanin in the skin helps protect against ultraviolet A (UVA), ultraviolet B (UVB), and visible blue light.
—Heather Jones, Verywell Health, 1 Aug. 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.
—Eric Lagatta, USA TODAY, 1 Nov. 2024
While your first inclination may be to dismiss it as a marketing ploy, the experiment was effective for the purposes of exploring the effects of space on whiskey thanks to the changes in temperature, humidity and ultraviolet radiation experienced at these heights.
—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 29 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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