spacetime

An event is a point in spacetime, specified by the coordinates x,y,z and t.
b) An ndimensional continuum consisting of dimensions of both space & time. Normally spacetime is considered as having 4 dimensions (x, y, z, t), but higherdimensional spacetimes are often encountered in theoretical physics, e.g. the 5dimensional spacetime of KaluzaKlein theory or the 11 dimensions of spacetime in Mtheory."a Schwarzschild spacetime," "a ReissnerNordström spacetime," etc. as opposed to sense (2) describing the universes spacetime as a whole: "a Minkowski spacetime," "a 5dimensional spacetime," etc.
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