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Definition of sunblock

sunblock

/ˈsʌn.blɑːk/
sun · block
Plural:sunblocks
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sunblock Lexical Profile

sunblock Game Scores & Validity

• noun

1

A cream or lotion applied to the skin to protect it from harmful ultraviolet rays by physically reflecting or scattering sunlight, prevents sunburn.

Example

"Make sure to apply plenty of sunblock before spending the afternoon at the beach."

Synonyms
View all synonyms for sunblock

Word Nuance & Usage

While often used interchangeably with 'sunscreen' in everyday speech, dermatologists distinguish 'sunblock' as a physical barrier (typically containing zinc oxide or titanium dioxide) that reflects ultraviolet rays, whereas 'sunscreen' uses chemical filters to absorb them.

• Nearby Words

sunbird
sunbittern
sunblind
sunblock
sunbonnet
sunburn
sunburned

Cite this Entry

Wordmom. (2026). Definition of Sunblock. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/sunblock
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