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SPF

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abbreviation
sun protection factor: the effectiveness of a sunscreen in protecting the skin from the sun's ultraviolet UVB radiation, as rated on a scale of increasing protectiveness, the number being the ratio of the radiation dose needed to produce minimal redness when using sunscreen compared to the dose needed to produce the same redness without sunscreen: An SPF of 15 will allow you to stay in the sun 15 times longer.
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His boss, whom he admires, is waiting to meet with him about the big project.
His boss, who he admires, is waiting to meet with him about the big project.
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Words nearby SPF

speug, spew, Spey, Speyer, Spezia, SPF, sp. gr., sphaeristerium, sphaero-, sphagnous, sphagnum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use SPF in a sentence

British Dictionary definitions for SPF (1 of 2)

SPF
abbreviation for
sender policy framework: a mechanism designed to prevent an e-mail address being duplicated and used as a false address from which to send unsolicited e-mails
sun protection factor: an indicator of how effectively a sun cream, lotion, cosmetic, etc, protects the skin from the harmful rays of the sunSPF 25

British Dictionary definitions for SPF (2 of 2)

S.P.F.
abbreviation for
vet science specific pathogen free; denoting animals specially bred to ensure that they are free of specified diseases
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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