Definitions
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 noun uncountable, physics The
fourdimensional continuum of the threespatial dimensions plustime .  noun physics An ndimensional continuum consisting of
dimensions of bothspace &time . Normally spacetime is considered as having 4 dimensions (x, y, z, t), but higherdimensional spacetimes are often encountered intheoretical physics , e.g. the 5dimensional spacetime ofKaluzaKlein theory or the 11 dimensions of spacetime inMtheory .  noun physics A specific region of the
universe with mathematically different properties than the surrounding spacetime. Synonymous with "metric" within the context ofgeneral relativity .
Etymologies
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Examples

My objection to punching a hole in spacetime is the same as my earlier objections.

My objection to punching a hole in spacetime is the same as my earlier objections.

My objection to punching a hole in spacetime is the same as my earlier objections.

Compared to that, the tiny risk to humanity, the planet and solar system, the galaxy and all other things that currently exist in spacetime is more than worth it.

Given that all biological processes apparently reduce to subatomic particles of matter interacting with each other and with waves of radiation in spacetime, is it fair to say that biology is essentially physics?

Given that all biological processes apparently reduce to subatomic particles of matter interacting with each other and with waves of radiation in spacetime, is it fair to say that biology is essentially physics?

This may be your best post yet; asking pointed questions to try and understand another's pointofview. stunney: Given that all biological processes apparently reduce to subatomic particles of matter interacting with each other and with waves of radiation in spacetime, is it fair to say that biology is essentially physics?

And the notion that our spacetime is a "virtual reality" is not in any way incompatible with Abrahamic religions.

Only living beings in spacetime can be aware of left and right, up and down, the things that quarks do.

Even a wormhole is not a “rip” in spacetime, it is just a topological feature in spacetime.
Comments
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whichbe commented on the word spacetime
In physics, any mathematical model that combines space and time into a single construct called the spacetime continuum. Spacetime is usually interpreted with space being threedimensional and time playing the role of the fourth dimension. (Wikipedia)
May 29, 2008