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
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.
Use a broad-spectrum, water-resistant sunscreen with a sun protection factor (SPF) of 30 or higher. Mark Gurarie, Verywell Health, 14 May 2025 Pick a broad-spectrum sunscreen with a sun protection factor (SPF) of at least 30.10 4. Carrie Madormo, Rn, Mph, Verywell Health, 30 Apr. 2025 What’s more fascinating is that, unlike LED light therapy, this laser works over sun protection factor (SPF) or makeup without (supposedly) losing efficacy. Julian Chokkattu, Wired News, 19 Apr. 2025 Wear sunscreen with a sun protection factor (SPF) of at least 30. Casey Gallagher, Health, 15 Apr. 2025 See All Example Sentences for sun protection factor

Word History

First Known Use

1968, in the meaning defined above

Time Traveler
The first known use of sun protection factor was in 1968

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Cite this Entry

“Sun protection factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sun%20protection%20factor. Accessed 22 May. 2025.

Medical Definition

sun protection factor

noun
: spf
Last Updated: - Updated example sentences
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