: 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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Director Nick Castle’s 1984 sci-fi adventure of a trailer park kid recruited to join an interstellar war against Xur and the ruthless Ko-Dan Armada is still a fantastic flick over 40 years after its original theatrical release. Jeff Spry, Space.com, 20 Apr. 2026 In 1997, Muldoon starred in Paul Verhoeven’s beloved sci-fi film Starship Troopers alongside Casper Van Dien, Denise Richards, and Neil Patrick Harris. Emily Zemler, Rolling Stone, 20 Apr. 2026 The slate includes deep-space sci-fi thriller Sentinel, about an engineer trapped in a drifting escape pod who must uncover who is sabotaging his chances of survival before his oxygen runs out. Andreas Wiseman, Deadline, 17 Apr. 2026 Bulgari, Octo Finissimo 37 When Bulgari first unveiled its sci-fi worthy Octo Finissimo timepiece in 2014, watch collectors and industry insiders alike were wowed by its powerful mechanics and ultra-thin silhouette. Charlie Boyd, CNN Money, 17 Apr. 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 21 Apr. 2026.

Kids Definition

sci-fi

noun
ˈsī-ˈfī
sci-fi adjective

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