UVB
noun
: radiation that is in the region of the ultraviolet spectrum which extends from about 280 to 320 nm in wavelength and that is primarily responsible for sunburn, aging of the skin, and the development of skin cancer
Examples of UVB in a Sentence
Recent Examples on the Web
New kid in the block Sunscreens are supposed to protect against both ultraviolet A (UVA) and B rays (UVB).
—
Devika Rao, TheWeek, 15 June 2026
According to the Warby Parker product page, Acuvue Oasys MAX 1-Day contacts also include a moisture technology called TearStable and block 82% of UVA rays and 97% of UVB rays.
—Samantha Agate, Sacbee.com, 13 June 2026
Bemotrizinol is described as absorbing UVA and UVB light rays by the American Chemical Society.
—Gina Kalsi, PEOPLE, 10 June 2026
Bemotrizinol is a chemical UV filter that provides protection against UVA and UVB rays.
—Emily Kay Votruba, EverydayHealth.com, 10 June 2026
Tanning and burns happen faster with UVA than UVB.
—Mary Walrath-Holdridge, USA Today, 9 June 2026
Previously some formulas only protected against UVB.
—CBS News, 9 June 2026
Like most sunscreens, this one contains main ingredients like avobenzone and octocrylene—key players that provide protection against harmful UVA and UVB rays.
—Alicia Geigel, Southern Living, 5 June 2026
Its mineral formula offers broad-spectrum UVA and UVB protection and is reef-safe.
—Bestreviews, Mercury News, 4 June 2026
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Devika Rao, TheWeek, 15 June 2026
According to the Warby Parker product page, Acuvue Oasys MAX 1-Day contacts also include a moisture technology called TearStable and block 82% of UVA rays and 97% of UVB rays.
—Samantha Agate, Sacbee.com, 13 June 2026
Bemotrizinol is described as absorbing UVA and UVB light rays by the American Chemical Society.
—Gina Kalsi, PEOPLE, 10 June 2026
Bemotrizinol is a chemical UV filter that provides protection against UVA and UVB rays.
—Emily Kay Votruba, EverydayHealth.com, 10 June 2026
Tanning and burns happen faster with UVA than UVB.
—Mary Walrath-Holdridge, USA Today, 9 June 2026
Previously some formulas only protected against UVB.
—CBS News, 9 June 2026
Like most sunscreens, this one contains main ingredients like avobenzone and octocrylene—key players that provide protection against harmful UVA and UVB rays.
—Alicia Geigel, Southern Living, 5 June 2026
Its mineral formula offers broad-spectrum UVA and UVB protection and is reef-safe.
—Bestreviews, Mercury News, 4 June 2026
Cite this Entry
“UVB.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/UVB. Accessed 18 Jun. 2026.
Copy CitationMedical Definition
UVB
noun
: radiation that is in the region of the ultraviolet spectrum which extends from about 280 to 320 nm in wavelength and that is primarily responsible for sunburn, aging of the skin, and the development of skin cancer
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