parallel universe

noun

A universe that exists separately alongside another universe, as part of a multiverse.

Similar
parallel world
Opposite
non-parallelizable universe
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Meanings

nounparallel universe (plural parallel universes)

plural parallel universes

  1. astronomyA universe that exists separately alongside another universe, as part of a multiverse.

    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.

    1998 [1997], David Deutsch, The Fabric of Reality, New York: Penguin Books, →ISBN, page 202

    Synonyms: parallel world

  2. The universe of an alternative history.

Synonyms & antonyms

nounA universe that exists separately alongside another universe, as part of a multiverse.

Similar
parallel world
Opposite
non-parallelizable universe
Also see
alternative universeparallel world

Translations

Arabic عَالَم مُوَازِي
  • عَالَم مُوَازِي (ʕālam muwāzī)universe that exists separately alongside another universe
Bulgarian парале́лна вселе́на
  • парале́лна вселе́на (paralélna vseléna)universe that exists separately alongside another universe
Catalan univers paral·lel
  • univers paral·leluniverse that exists separately alongside another universe
Chinese Mandarin 平行宇宙
  • 平行宇宙 (píngxíng yǔzhòu)universe that exists separately alongside another universe
Danish parallelunivers, parallelt univers
  • paralleluniversuniverse that exists separately alongside another universe
  • parallelt universuniverse that exists separately alongside another universe
Esperanto paralela universo
  • paralela universouniverse that exists separately alongside another universe
Finnish rinnakkainen maailmankaikkeus, rinnakkaistodellisuus
  • rinnakkainen maailmankaikkeusuniverse that exists separately alongside another universe
  • rinnakkaistodellisuusuniverse that exists separately alongside another universe
French univers parallèle
  • univers parallèleuniverse that exists separately alongside another universe
German Paralleluniversum
  • Paralleluniversumuniverse that exists separately alongside another universe
Greek παράλληλο σύμπαν
  • παράλληλο σύμπαν (parállilo sýmpan)universe that exists separately alongside another universe
Hungarian párhuzamos univerzum
  • párhuzamos univerzumuniverse that exists separately alongside another universe
Japanese 平行宇宙
  • 平行宇宙 (heikō uchū)universe that exists separately alongside another universe
Portuguese universo paralelo
  • universo paralelouniverse that exists separately alongside another universe
Spanish universo paralelo, universo alterno
  • universo paralelouniverse that exists separately alongside another universe
  • universo alternouniverse that exists separately alongside another universe
Turkish paralel evren
  • paralel evrenuniverse that exists separately alongside another universe
Cite this entry
APA

parallel universe. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/parallel%20universe

MLA

“parallel universe.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/parallel%20universe. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “parallel universe,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/parallel%20universe.

Source: parallel universe on Wiktionary, CC BY-SA 4.0.