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 sun
SPF 25
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It will stop becoming entertaining when every survivor has to wear SPF sunscreen rated at least 1,000 just to take out the trash.
From Salon ● Aug. 28, 2026
Use high-protection sunscreen - at least SPF 30 - as a base before the make-up and let it soak in like any primer, says Wedgeworth.
From BBC ● Jul. 30, 2026
For many foundations and powders, you would need to use several more layers than you normally would to achieve the advertised SPF protection, Mount Sinai dermatologist Dr. Helen He said.
From The Wall Street Journal ● Jul. 3, 2026
Once they are six months old, the NHS recommends using a sunscreen rated at least 50 SPF which offers high levels of protection from both UVA and UVB.
From BBC ● Jun. 22, 2026
“Don’t you know anything about SPF? Skin cancer?”
From "Beauty Queens" by Libba Bray
I’m so white I’m almost translucent Check out the S.P.F.
From New York Times ● Apr. 9, 2020
But as unappealing as a leafy Tostitos lime cocktail with hints of S.P.F.
From The New Yorker ● Dec. 21, 2015
However, the Food and Drug Administration has not determined that an S.P.F. of more than 50 has any added benefits.
From New York Times ● Jun. 29, 2015
Some consumers erroneously believe that choosing a more expensive sunscreen with a sky-high S.P.F. number like 70 or 100 will provide complete protection.
From New York Times ● Jun. 29, 2015
Dermatologists have long cautioned people not to rely too heavily on sunscreens, even products with the recommended S.P.F. rating of 30 or higher for summer sun protection.
From New York Times ● Jun. 29, 2015
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
