Definition of sci-fi in English:

sci-fi

Syllabification: sci-fi
Pronunciation: /ˈsī ˈfī
 
/

noun

informal
  • short for science fiction.
    More example sentences
    • All of the sudden, this alien bothered me much more than any creepy creature from a sci-fi movie.
    • Yes, my friend and I came up with that when we were having a sci-fi movie marathon.
    • While it sounded like something out of a cheesy sci-fi movie, it was a danger Edward had to avoid.

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Word of the day astrogation
Pronunciation: ˌastrəˈgāSHən
noun
(in science fiction) navigation in outer space