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

Zippered hand and bib pockets also make storing small essentials like sunblock and a lift ticket easy. —Emily Pennington, Outside Online, 23 Oct. 2024

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

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