: of, relating to, or being science fiction
a sci-fi film
sci-fi noun

Examples of sci-fi in a Sentence

Recent Examples on the Web
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Emily Blunt, Josh O'Connor and Eve Hewson lead the sci-fi chase movie, which centers on an effort to disclose the existence of aliens to the world. Brendan Morrow, USA Today, 15 June 2026 Chris is a freelance journalist who, when not writing or falling further down the Lego rabbit hole, indulges his taste for horror, sci-fi and the post-apocalyptic. Chris McMullen, Space.com, 15 June 2026 The sci-fi/supernatural pic stars Michelle Mao, Haley Lu Richardson and Jin Ha. Anthony D'alessandro, Deadline, 15 June 2026 The sci-fi actioner cost about $200 million to produce and will have collected $47 million by the end of the weekend. Jack Dunn, Variety, 13 June 2026 See All Example Sentences for sci-fi

Word History

Etymology

shortened from science fiction

First Known Use

1953, in the meaning defined above

Time Traveler
The first known use of sci-fi was in 1953

Browse Nearby Words

Cite this Entry

“Sci-fi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sci-fi. Accessed 17 Jun. 2026.

Kids Definition

sci-fi

noun
ˈsī-ˈfī
sci-fi adjective

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