parallel universe

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English

Noun

parallel universe (plural parallel universes)

  1. (sciences, science fiction, cosmology) A universe that exists separately alongside another universe, as part of a multiverse.
    • 1998 [1997], David Deutsch, The Fabric of Reality, New York: Penguin Books, →ISBN, page 202:
      Subjectively we perceive this as a single, unpredictable or ‘random’ outcome, though from the multiverse point of view all the outcomes have actually happened. This parallel-universe multiplicity is the real reason for the unpredictability of the weather.

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Antonyms

  • periphrasis: non-parallelizable universe (mathematically incompatible; without a common superordinate wave function)

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