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

If slicking yourself up in sticky sunblock isn’t the ideal start to your day, shoppers have turned us on to a best-selling new shirt on Amazon that’s stylish enough for everyday wear, but packed with UPF 50 sun protection to keep sensitive skin safe from harm. —Miles Walls, Better Homes & Gardens, 27 Apr. 2025

Proper nutrition ensures that vitamin C, zinc, and amino acids support collagen formation internally, while topical use of sunblock can decrease collagen degradation caused by UV damage. —Cierra Black, Essence, 18 Apr. 2025

This event will happen rain or shine; closed-toed shoes, hats and sunblock are recommended. —Anne Gelhaus, The Mercury News, 16 Feb. 2025

Teaching natural consequences shouldn’t put your kid in harm's way—which means putting your foot down on essentials like wearing a helmet or putting on sunblock at the beach. —Lauryn Higgins, Parents, 16 Jan. 2025

Word History

First Known Use

1953, in the meaning defined above

Rhymes for sunblock

• alcock
• beanstalk
• bedrock
• boardwalk
• catwalk
• cornstalk
• crosswalk
• deadlock
• feedstock
• fetlock
• flintlock
• goshawk

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