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

The rise of the robots is science fiction no more. —Marc Lieberman, CBS News, 5 Jan. 2026

What once seemed like science fiction is now becoming a reality as companies look to space to manufacture everything from life-saving pharmaceuticals to artificial tissues. —Mrigakshi Dixit, Interesting Engineering, 31 Dec. 2025

Wormholes are a staple of Hollywood and science fiction — a handy device for any kind of space or time travel. —Katia Riddle, NPR, 31 Dec. 2025

Like so many humanoids, Apollo exemplifies the uncanny, hyperreal nature of modern robotics, simultaneously an image from science fiction and a real, tangible machine. —James Vincent, Harpers Magazine, 30 Dec. 2025

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