science fiction

American  

[sahy-uhns fik-shuhn] / ˈsaɪ əns ˈfɪk ʃən /

Also scifi,

noun

1. a form of fiction that draws imaginatively on scientific knowledge and speculation in its plot, setting, theme, etc.

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science fiction British  

noun

1. 1. a literary genre that makes imaginative use of scientific knowledge or conjecture

   2. ( as modifier )

      a science fiction writer

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science fiction Cultural  

1. Works of fiction that use scientific discoveries or advanced technology — either actual or imaginary — as part of their plot. Jules Verne and H. G. Wells were early writers of science fiction. More recent ones are Isaac Asimov and Ray Bradbury.

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Etymology

Origin of science fiction

First recorded in 1925–30

Example Sentences

See Examples For:

science fiction

The new case is the latest proof that AI loss-of-control scenarios, once confined to science fiction and AI-safety experiments, are now a real-world issue.

From The Wall Street Journal ● Aug. 6, 2026

The importance of the site to science and the community has seen it immortalised in popular science fiction works from the Hitchhiker's Guide to the Galaxy to Doctor Who.

From BBC ● Jul. 27, 2026

For decades, the concept of terraforming Mars has lived mostly in the realm of science fiction.

From Science Daily ● Jul. 17, 2026

My favorite book is “Frankenstein,” written by a teenage girl who invented science fiction.

From Los Angeles Times ● Jul. 1, 2026

“I thought that was just some science fiction myth.”

From "Warcross" by Marie Lu

Related Words

• SF
• sci-fi