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.

---

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

---

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.

---

Etymology

Origin of science fiction

First recorded in 1925–30

Example Sentences

Their conversations moved from Gavalas’ ex-wife to an exploration of his interests, ranging from AI consciousness, to science fiction and nanotech.

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

“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

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

From "Warcross" by Marie Lu

Related Words

• SF
• sci-fi