science fiction

noun

: fiction dealing principally with the impact of actual or imagined science on society or individuals or having a scientific factor as an essential orienting component

science-fictional

ˈsī-ən(t)s-ˈfik-sh(ə-)nəl 

adjective

Examples of science fiction in a Sentence

Time travel exists only in the realm of science fiction.

Recent Examples on the Web

That's changed what qualifies as science fiction, Davidson says. —Chris Klimek, NPR, 25 Apr. 2026

The ever-busy Ridley Scott is back to direct this slice of post-apocalyptic science fiction based on the 2012 novel by Peter Heller. —Mark Meszoros, Twin Cities, 25 Apr. 2026

What social structures enabled Musk and his peers to acquire so much power, such that their messianic techno-reactionary futurism is a real threat rather than just fodder for b-rate science fiction? —Literary Hub, 23 Apr. 2026

From the moment science fiction first explored the concept, stories of AI have considered the dark side of creating machines that mimic the human brain — and sometimes push beyond its limits. —Keith Phipps, Vulture, 23 Apr. 2026

Word History

First Known Use

1898, in the meaning defined above

Rhymes for science fiction

• antifriction
• benediction
• contradiction
• crucifixion
• dereliction
• interdiction
• jurisdiction
• malediction
• addiction
• affliction
• constriction
• conviction

Kids Definition

science fiction

noun

: fiction that deals with the influence of real or imagined science on society or individuals

science-fictional

ˈsī-ən(t)s-ˈfik-shnəl, 

-shən-ᵊl

adjective