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sun protection factor

noun
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Definition of sun protection factor

: a number assigned to a sunscreen that is the factor by which the time required for unprotected skin to become sunburned is increased when the sunscreen is used —abbreviation SPF

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Recent Examples of sun protection factor from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sun protection factor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of sun protection factor

1978

in the meaning defined above

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Medical Dictionary

sun protection factor

noun

medical Definition of sun protection factor

: spf

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sun protection factor

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