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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.

Gatwa, who played the Doctor in the long-running science fiction show for two seasons, will be made a Doctor of the University, as will Sarah Smith, the BBC's North America editor.

From BBC • Apr. 14, 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

“The Blue Trail” is lyrical science fiction that takes place just around the next bend.

From Los Angeles Times • Apr. 3, 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

Both sets of ideas passed into the public imagination through Sunday supplements and science fiction.

From "Cosmos" by Carl Sagan