Dyson-sphere definition

A hypothetical system of orbiting solar power satellites meant to completely encompass a star and capture its entire energy output.
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(science fiction) A solid shell of matter enclosing a star.
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Other Word Forms

Noun

Singular:
dyson-sphere
Plural:
dyson-spheres

Origin of dyson-sphere

  • Named for Freeman Dyson, who originally described the concept in 1960.

    From Wiktionary