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Definitions

science fiction

[sahy-uhns fik-shuhn] / ˈsaɪ əns ˈfɪk ʃən /
NOUN
literary fantasy about future
Synonyms
STRONGEST
SF sci-fi
WEAK
futurism sci-fi movie space fiction space odyssey space opera

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The site attracts a mix of visitors, from families seeking a sense of adventure to enthusiasts drawn by its detailed references to science fiction, including a Tardis-style bathroom and optional costumes inspired by popular franchises.

From BBC • Apr. 14, 2026

Some of these fears stem from science fiction portrayals of AI, while others are rooted in potential job displacement or ethical considerations.

From The Wall Street Journal • Apr. 12, 2026

It sounds like science fiction, but space is becoming a strategic asset for companies and governments worldwide.

From Barron's • Apr. 1, 2026

I say that as an example of talking about time, of talking about multiverses, of all these complicated things that are part of our science fiction lore and part of our show.

From Los Angeles Times • Mar. 30, 2026

Swift had read Cyrano, and Gulliver is a cunning variation on the by then conventional themes of science fiction, one in which islands are substituted for planets.

From "The Invention of Science" by David Wootton