near-ultraviolet

adjective

near-ul·​tra·​vi·​o·​let ˌnir-ˌəl-trə-ˈvī-(ə-)lət How to pronounce near-ultraviolet (audio)
: of, relating to, or being the longest wavelengths of radiation in the ultraviolet spectrum especially between 300 and 400 nanometers

Examples of near-ultraviolet in a Sentence

Recent Examples on the Web
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.
Broad-spectrum light is usually whitish in color and does not contain any UV rays, while full-spectrum light has a bluish color and features wavelengths from infrared to near-ultraviolet. Bestreviews, Chicago Tribune, 16 Jan. 2026 This detailed information primarily spans the visible spectrum and often extends into near-infrared and near-ultraviolet regions crucial for simulating how materials interact with light accurately. ArsTechnica, 28 Mar. 2025 Lithography systems in the 1980s used mercury lamps that radiated at wavelengths of 436 nanometers (violet light) and eventually 365 nm (near-ultraviolet). Jayson Stewart, IEEE Spectrum, 5 Mar. 2025 At the same time, the dye absorbs most light at wavelengths in the near-ultraviolet and blue spectrums and decreases the scattering of those types of light. Lauren J. Young, Scientific American, 5 Sep. 2024

Word History

First Known Use

1951, in the meaning defined above

Time Traveler
The first known use of near-ultraviolet was in 1951

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Cite this Entry

“Near-ultraviolet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/near-ultraviolet. Accessed 30 Jun. 2026.

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