spacetime

Fetched 2026-10-26 (cache).

Synonyms: space-time, space time, facetime, peacetime, spare time, snacktime, spacelike

Antonyms: space-time, space time, facetime, peacetime, spare time, snacktime, spacelike

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|uncountable|physics}} The [[four-dimensional]] [[continuum]] of the three [[spatial]] [[dimension]]s plus [[time]]. {{C|en|Higher-dimensional geometry}}
2. {{lb|en|physics}} An ''n''-dimensional continuum consisting of [[dimension]]s of both [[space]] and [[time]]. Normally spacetime is considered as having 4 dimensions (''x'', ''y'', ''z'', ''t''), but higher-dimensional spacetimes are often encountered in [[theoretical]] [[physics]], e.g. the 5-dimensional spacetime of [[Kaluza-Klein theory]] or the 11 dimensions of spacetime in [[M-theory]].
3. {{lb|en|relativity}} A specific region of the [[universe]] with mathematically different properties than the surrounding spacetime. Synonymous with "metric" within the context of [[general relativity]].

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