science fiction Meaning in the Cambridge English Dictionary
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Meaning of “science fiction” in the English Dictionary

"science fiction" in British English

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science fictionnoun [U]

uk   us   (informal sci-fi, also SF)
B1 books, ​films, or cartoons about an ​imaginedfuture, ​especially about ​spacetravel or other ​planets: a science-fiction ​novel/​story
(Definition of science fiction from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"science fiction" in American English

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science fictionnoun [U]

 us   /ˈsɑɪ·əns ˈfɪk·ʃən/ (short form sci-fi,  /ˈsɑɪˈfɑɪ/ )
a ​type of writing about ​imagined developments in science and ​theireffect on ​life esp. in the ​future
(Definition of science fiction from the Cambridge Academic Content Dictionary © Cambridge University Press)
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