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
On the heels of a high-profile assault on New York City Police Department (NYPD) officers by teen members of the ultraviolet Venezuelan gang Tren de Aragua, Fox News has confirmed that migrants are committing crimes by the thousands in New York City shelters.
—
Peter D'abrosca , Cb Cotton, FOXNews.com, 7 May 2025
This procedure involves removing white blood cells from your blood, treating them with ultraviolet light, and returning them to your body.
—Suchandrima Bhowmik, Health, 2 May 2025
Fluoride and chlorine — to kill bacteria — are added to the water, and it is disinfected with ultraviolet light.
—Yuvraj Khanna, New York Times, 1 May 2025
That melanin is produced by skin cells exposed to ultraviolet light, which is usually more prevalent in the summer.
—Hannah Yasharoff, USA Today, 28 Apr. 2025
See All Example Sentences for ultraviolet
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Peter D'abrosca , Cb Cotton, FOXNews.com, 7 May 2025
This procedure involves removing white blood cells from your blood, treating them with ultraviolet light, and returning them to your body.
—Suchandrima Bhowmik, Health, 2 May 2025
Fluoride and chlorine — to kill bacteria — are added to the water, and it is disinfected with ultraviolet light.
—Yuvraj Khanna, New York Times, 1 May 2025
That melanin is produced by skin cells exposed to ultraviolet light, which is usually more prevalent in the summer.
—Hannah Yasharoff, USA Today, 28 Apr. 2025
See All Example Sentences for ultraviolet
Cite this Entry
“Ultraviolet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultraviolet. Accessed 15 May. 2025.
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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share