sunblock
Americannoun
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a substance that provides a high degree of protection against sunburn, often preventing most tanning as well as burning, as by obstructing the penetration of ultraviolet rays.
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a lotion, cream, etc., containing such a substance.
Etymology
Origin of sunblock
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Products passing through the giant site range from insulin capsules and lifestyle drugs to medicated sunblock and drums of sulphuric acid.
From Barron's • Apr. 5, 2026
Jasso offered me water, sunblock, a hat and an orange, but I declined.
From Los Angeles Times • Oct. 16, 2024
"You have to use sunblock, you have to cover your face and body, because it can be a bit dangerous if you get a sunburn or heat rash," said Solis.
From Salon • Sep. 3, 2024
Darker skin tones, prevalent in equatorial regions, serve as nature's very own sunblock, evolving over millennia to shield these populations from the sun's intense ultraviolet radiation.
From Science Daily • Jan. 12, 2024
Kendra wrapped the towel around her waist, picked up the sunblock Seth had left behind, and started toward the house.
From "Fablehaven" by Brandon Mull
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.