Science Fiction Definition
science-fiction
noun
A literary or cinematic genre in which fantasy, typically based on speculative scientific discoveries or developments, environmental changes, space travel, or life on other planets, forms part of the plot or background.
American Heritage
Fiction of a highly imaginative or fantastic kind, typically involving some actual or projected scientific phenomenon.
Webster's New World
Technology that, while theoretically possible, is not yet practical.
Despite decades of research, mass-market personal aircraft are still science fiction.
Wiktionary
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