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

Such a notion would have seemed like science fiction only a few years ago, but since the orbital data center frenzy kicked off last year, the once-fanciful prospect has become a distinct possibility. — Tereza Pultarova, Space.com, 20 July 2026

As a science fiction writer, Scott went straight to world-building. — Scott Westerfeld, PEOPLE, 19 July 2026

The latter half of this episode works well as science fiction/action television, with one exception. — Noel Murray, Vulture, 17 July 2026

But the story about the war hero Odysseus, whose journey home with his men is beset by sea storms, shipwrecks, gods, monsters and shady ladies, set the template for literature, comic books, science fiction and Hollywood epics for centuries to come. — Jim Beckerman, USA Today, 16 July 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