sunblock

noun

sun·​block ˈsən-ˌbläk How to pronounce sunblock (audio)
: a preparation (such as a lotion) applied to the skin to prevent sunburn (as by physically blocking out ultraviolet radiation)
also : its active ingredient (such as titanium dioxide) compare sunscreen

Examples of sunblock 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.
Wear a broad-spectrum, SPF 30 or higher water-resistant sunblock every day. Ann Pietrangelo, Verywell Health, 16 May 2025 Just keep one thing in mind: Austin days can be scorchers, even in October, so don’t leave your sunblock at home. Dan Reilly, Vulture, 9 Apr. 2025 This means applying moisturizers and sunblock and avoiding sleeping on wet hair. Sherri Gordon, Health, 14 May 2025 Spring breakers happily sunbathed on the sand, sipped pink slushy cocktails at Señor Frog’s, flirted on the sidewalk and neglected to apply sunblock to their already pink shoulders. Aaron Leibowitz, Miami Herald, 22 Mar. 2025 See All Example Sentences for sunblock

Word History

First Known Use

1953, in the meaning defined above

Time Traveler
The first known use of sunblock was in 1953

Browse Nearby Words

Cite this Entry

“Sunblock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sunblock. Accessed 11 Jun. 2025.

Kids Definition

sunblock

noun
sun·​block -ˌbläk How to pronounce sunblock (audio)
: a preparation (as a lotion) applied to the skin to prevent sunburn (as by physically blocking out the sun's rays)

Medical Definition

sunblock

noun
sun·​block ˈsən-ˌbläk How to pronounce sunblock (audio)
: a preparation (as a lotion) applied to the skin to prevent sunburn (as by physically blocking out ultraviolet radiation)
also : its active ingredient (as titanium dioxide) compare sunscreen

More from Merriam-Webster on sunblock

Last Updated: - Updated example sentences
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