# Spacetime vs Geometrodynamics - What's the difference?

spacetime | geometrodynamics |

## In physics|lang=en terms the difference between spacetime and geometrodynamics

is that spacetime is (physics) an n''-dimensional continuum consisting of dimensions of both space & time normally spacetime is considered as having 4 dimensions (''x'', ''y'', ''z'', ''t ), but higher-dimensional spacetimes are often encountered in theoretical physics, eg the 5-dimensional spacetime of kaluza-klein theory or the 11 dimensions of spacetime in m-theory while geometrodynamics is (physics) any of several reformulations of general relativity that attempt to describe spacetime and associated phenomena completely in terms of geometry.

## As nouns the difference between spacetime and geometrodynamics

is that spacetime is (uncountable|physics) the four-dimensional continuum of the three spatial dimensions plus time while geometrodynamics is (physics) any of several reformulations of general relativity that attempt to describe spacetime and associated phenomena completely in terms of geometry.

# spacetime

## English

(wikipedia spacetime)

### Noun

• (uncountable, physics) The four-dimensional continuum of the three spatial dimensions plus time.
• An event is a point in spacetime , specified by the coordinates x,y,z and t.
• (physics) An n''-dimensional continuum consisting of dimensions of both space & 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.
• "a Schwarzschild spacetime," "a Reissner-Nordström spacetime," etc. as opposed to sense (2) describing the universe's spacetime as a whole: "a Minkowski spacetime," "a 5-dimensional spacetime," etc.

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# geometrodynamics

## English

### Noun

(wikipedia geometrodynamics) (-)
• (physics) Any of several reformulations of general relativity that attempt to describe spacetime and associated phenomena completely in terms of geometry.