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  • sf
    sf
    science fiction.
  • SF
    SF
    science fiction.
Synonyms

sf

1 American  
  1. science fiction.

  2. Music. sforzando.


SF 2 American  
  1. science fiction.

  2. sinking fund.


SF 1 British  

abbreviation

  1. science fiction

"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

sf 2 British  

abbreviation

  1. sforzando

"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.

See Examples For:

Today, Clute remains the benevolent godfather of sf criticism, but Nicholls essentially stopped writing after being diagnosed with Parkinson’s disease in 2000.

From Washington Post ● Nov. 10, 2022

We ran an “Ode on the Death of Philip K. Dick,” by sf great Thomas M. Disch.

From Washington Post ● Sep. 22, 2022

Modern sf usually traces its origins to 1926, when Hugo Gernsback founded “Amazing Stories.”

From Washington Post ● Jan. 19, 2022

Still, the phrase most often used to describe early sf — the preferred abbreviation for this beloved literary genre — is “scientific romance.”

From Washington Post ● Feb. 28, 2017

Dr. McClatchie, whose recent novel, "The Last Vial," established him as a top-ranking sf writer, now tells us the engaging story of the geneticists' search for ...

From Mother America by Dan Adkins

A SF Porchfest app helps plan out the day, and the SF Porchfest Spotify playlist recaps the event’s music.

From MarketWatch ● Sep. 24, 2026

There is a “trash fence,” a 4-foot-high, 9.2-mile-long orange plastic barrier, according to SF Gate, that blocks the trash from blowing away in the desert.

From Salon ● Sep. 11, 2026

At her election night party, Chan told the SF Standard that Pelosi’s endorsement “absolutely changed the tide” in the race, delivering a “fatal punch” on behalf of her campaign.

From Los Angeles Times ● Jun. 3, 2026

After the March election, the Social Democrats' main right-wing rival, the Liberal party Venstre, also had their worst results for over a century, with just 10.1%, falling behind the Green Left SF.

From BBC ● Jun. 2, 2026

Olly: you mean you don’t go to SF Valley High? where do you go?

From "Everything, Everything" by Nicola Yoon

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