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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.

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

Witnessing a solar eclipse from space was a spectacle worthy of science fiction, as pilot Glover put it.

From Barron's • Apr. 10, 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

This includes teams working with China's Einstein Probe and the National Science Foundation's Very Large Array, which is widely recognized from its appearance in the science fiction film Contact.

From Science Daily • Mar. 30, 2026

Anger sends out a strange energy, like a force field in a science fiction movie.

From "Nine, Ten: A September 11 Story" by Nora Raleigh Baskin