WordReference Random House Learner's Dictionary of American English © 2025
SF or sf,
  1. science fiction.

WordReference Random House Unabridged Dictionary of American English © 2025
SF, 
    1. science fiction.
    2. Businesssinking fund.

sf, 
    1. science fiction.
    2. Music and Dancesforzando.

s-f, 
  1. science fiction.

Collins Concise English Dictionary © HarperCollins Publishers::
SF, sf
  1. science fiction
Collins Concise English Dictionary © HarperCollins Publishers::
sf, sf., sfz, sfz.
  1. sforzando
'SF' also found in these entries (note: many are not synonyms or translations):
sforzando

Forum discussions with the word(s) "SF" in the title:


Look up "SF" at Merriam-Webster
Look up "SF" at dictionary.com
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