spacetime (countable and uncountable, plural spacetimes)
(uncountable, physics) The four-dimensional continuum of the three spatial dimensions plus time.
(physics) An n-dimensional continuum consisting of dimensions 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.
(relativity) A specific region of the universe with mathematically different properties than the surrounding spacetime. Synonymous with "metric" within the context of general relativity.
• temporospatial
• spatiotemporal
• empaestic, timescape
Source: Wiktionary
21 February 2025
(noun) some artifact that has been restored or reconstructed; “the restoration looked exactly like the original”
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