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sun protection factor
noun
: a number assigned to a sunscreen that is the factor by which the time required for unprotected skin to become sunburned is increased when the sunscreen is used
—abbreviation SPF
Examples of sun protection factor in a Sentence
Recent Examples on the Web
Wear sunscreen: Protect your skin from UV rays and maintain pH by wearing sunscreen with a high SPF (sun protection factor).
—Mark Gurarie, Verywell Health, 30 Oct. 2024
Sunscreen: To protect your skin from sun damage, finish your morning skin care routine by applying a broad-spectrum sunscreen with a sun protection factor (SPF) of 30 or higher.
—Lindsay Curtis, Verywell Health, 13 Sep. 2024
Cream foundation and the importance of SPF (sun protection factor).
—Renan Botelho, WWD, 7 Aug. 2024
Apply a broad-spectrum, water-resistant sunscreen with a sun protection factor (SPF) of 30 or higher to protect against overexposure to ultraviolet A (UVA) and ultraviolet B (UVB) rays.
—Anna Giorgi, Verywell Health, 24 July 2024
See all Example Sentences for sun protection factor
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Word History
First Known Use
1968, in the meaning defined above
Time Traveler
The first known use of sun protection factor was
in 1968
Dictionary Entries Near sun protection factor
Cite this Entry
“Sun protection factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sun%20protection%20factor. Accessed 18 Nov. 2024.
Medical Definition
sun protection factor
noun
: spf
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