: 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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Questions about what the federal government may know about extraterrestrial life in the cosmos — or possibly even here on Earth — have inspired imaginations, conspiracy theories, sci-fi literature and blockbuster films. Graham Kates, CBS News, 24 Feb. 2026 The sci-fi series returns for its fifth season on March 27. Rosy Cordero, Deadline, 24 Feb. 2026 The sci-fi show takes place in a world in which the population has been mostly decimated by an apocalyptic natural disaster, except for the lucky few who made it into a bunker built for wealthy elites. Kelly Lawler, USA Today, 23 Feb. 2026 But while speaking with Matthew McConaughey at Variety and CNN’s town hall event at the University of Texas at Austin, Chalamet revealed some new details that have inspired his portrayal of Paul Atreides in Denis Villeneuve’s sci-fi trilogy. Selome Hailu, Variety, 21 Feb. 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 1 Mar. 2026.

Kids Definition

sci-fi

noun
ˈsī-ˈfī
sci-fi adjective

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