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Spacetime

//ˈspeɪsˌtaɪm// noun

Definitions

Noun
  1. 1
    The four-dimensional continuum of the three spatial dimensions plus time. uncountable

    "An event is a point in spacetime, specified by the coordinates x, y, z, and t."

  2. 2
    the four-dimensional coordinate system (3 dimensions of space and 1 of time) in which physical events are located wordnet
  3. 3
    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. countable, uncountable

    "a Minkowski spacetime"

  4. 4
    A specific region of the universe with mathematically different properties than the surrounding spacetime. Synonymous with "metric" within the context of general relativity. countable, uncountable

    "a Schwarzschild spacetime"

Etymology

From space + time, as a calque of German Raumzeit, introduced in this sense by Hermann Minkowski. First appears in print c. 1893 in the Philosophical Review.

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