sunblock

noun

sun·​block ˈsən-ˌbläk 

: 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

Thinking there had to be a better—and more fun—way to get sunblock on her kids, Lawi came up with the idea behind Sqween. —Vivienne Decker, Forbes, 1 Oct. 2024

Plenty of answers have surfaced — people smoked more in the past, didn’t use sunblock, and sometimes chose hairstyles or clothing that seemed more aged. —Emilie Le Beau Lucchesi, Discover Magazine, 5 Aug. 2024

This innovative sunblock prevents oxidation, ensuring each application feels as fresh as the first. —Priscilla Mak, Rolling Stone, 13 Aug. 2024

Meier went to one pool at a hotel in Cabo San Lucas, Mexico, where someone cleaned sunglasses and guests could go to a tent where a worker would apply sunblock. —Hannah Sampson, Washington Post, 3 July 2024

Word History

First Known Use

1953, in the meaning defined above

Kids Definition

sunblock

noun

sun·​block -ˌbläk 

: 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 

: 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