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
Limiting significant sun exposure and using a sunscreen that contains an SPF 30 or greater and offers UVA and UVB protection is key.
—
Sherri Gordon, Parents, 18 Dec. 2025
The vitamin D content of eggs may be increased naturally by adding vitamin D to a hen's diet or exposing egg yolks to UVB rays.
—Laura Dorwart, Verywell Health, 15 Dec. 2025
Ultra-Light Moisturizing Lotion SPF 30, and Cetaphil UVA/UVB Defense SPF50 Daytime Moisturizer.
—Jacqueline Kilikita, Refinery29, 12 Dec. 2025
Tanning and burns happen faster with UVA than UVB.
—Mary Walrath-Holdridge, USA Today, 11 Dec. 2025
Harnessing the benefits of niacinamide, the top-seller protects from both UVA rays (responsible for visible aging) and UVB ones (those that actually cause burns).
—Stacia Datskovska, Footwear News, 12 Sep. 2025
All are broad-spectrum, providing both UVA and UVB protection.
—Laia Farran Graves, Forbes.com, 14 Aug. 2025
The lenses come with protection from UVA and UVB rays.
—Christopher Murray
May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 13 Aug. 2025
Now 45% off Amazon Neutrogena Sport Face Sunscreen SPF 70+, Oil-Free Facial Sunscreen Lotion with Broad Spectrum UVA/UVB Sun Protection, Sweat-Resistant & Water-Resistant, 2.5 fl.
—Kelsey Chapman, ABC News, 25 Mar. 2024
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.
Sherri Gordon, Parents, 18 Dec. 2025
The vitamin D content of eggs may be increased naturally by adding vitamin D to a hen's diet or exposing egg yolks to UVB rays.
—Laura Dorwart, Verywell Health, 15 Dec. 2025
Ultra-Light Moisturizing Lotion SPF 30, and Cetaphil UVA/UVB Defense SPF50 Daytime Moisturizer.
—Jacqueline Kilikita, Refinery29, 12 Dec. 2025
Tanning and burns happen faster with UVA than UVB.
—Mary Walrath-Holdridge, USA Today, 11 Dec. 2025
Harnessing the benefits of niacinamide, the top-seller protects from both UVA rays (responsible for visible aging) and UVB ones (those that actually cause burns).
—Stacia Datskovska, Footwear News, 12 Sep. 2025
All are broad-spectrum, providing both UVA and UVB protection.
—Laia Farran Graves, Forbes.com, 14 Aug. 2025
The lenses come with protection from UVA and UVB rays.
—Christopher Murray
May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 13 Aug. 2025
Now 45% off Amazon Neutrogena Sport Face Sunscreen SPF 70+, Oil-Free Facial Sunscreen Lotion with Broad Spectrum UVA/UVB Sun Protection, Sweat-Resistant & Water-Resistant, 2.5 fl.
—Kelsey Chapman, ABC News, 25 Mar. 2024
Cite this Entry
“UVB.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/UVB. Accessed 26 Dec. 2025.
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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share