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.
abbreviation
-
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
"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
abbreviation
-
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
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any
opinions expressed do not reflect the views of Dictionary.com.
It also made recommendations to remove VAT on all children's sun cream and on high SPF products for adults.
From
BBC
• May 13, 2026
If people do choose to go outside, he recommends that they wear plenty of protective clothing and SPF.
From
Los Angeles Times
• May 6, 2026
SPF gloss goes great with her collection of wide-brimmed hats.
From
The Wall Street Journal
• Apr. 24, 2026
"It's vital that consumers can rely on SPF claims when purchasing products to protect their skin from the harsh Australian sun."
From
BBC
• Mar. 26, 2026
“Don’t you know anything about SPF? Skin cancer?”
From
"Beauty Queens" by Libba Bray
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
