sun protection factor


sun protection factor

noun

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

First Known Use of SUN PROTECTION FACTOR

1978

sun protection factor

noun    (Medical Dictionary)

Medical Definition of SUN PROTECTION FACTOR

: spf

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