Definition of sci-fi in English:
Short for science fiction.
- 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.
Definition of sci-fi in:
- British & World English dictionary