achronal

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As an adjective achronal is

describing a set of points in a spacetime, no two of which have timelike separation.

As adjectives the difference between achronal and chronal

is that achronal is describing a set of points in a spacetime, no two of which have timelike separation while chronal is of or pertaining to time.

As an adjective achronal

is describing a set of points in a spacetime, no two of which have timelike separation.

As a noun achronality is

the condition of being achronal.

As a noun separation

is separation.

As an adjective achronal is

(physics) describing a set of points in a spacetime, no two of which have timelike separation.

In physics terms the difference between timelike and achronal

is that timelike is (of the interval between two events in spacetime) Having overlapping light cones, so that information can pass from one to the other, and one can be envisaged as a cause of the other while achronal is describing a set of points in a spacetime, no two of which have timelike separation.

As adjectives the difference between timelike and achronal

is that timelike is of a four-vector in representing a point in spacetime, having a positive four-vector norm while achronal is describing a set of points in a spacetime, no two of which have timelike separation.

In physics terms the difference between spacetime and achronal

is that spacetime is 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 while achronal is describing a set of points in a spacetime, no two of which have timelike separation.

As a noun spacetime

is the four-dimensional continuum of the three spatial dimensions plus time.

As an adjective achronal is

describing a set of points in a spacetime, no two of which have timelike separation.

As a noun point

is a discrete division of something.

As a verb point

is to extend the index finger in the direction of something in order to show where it is or to draw attention to it.

As an adjective achronal is

describing a set of points in a spacetime, no two of which have timelike separation.

As adjectives the difference between set and achronal

is that set is fixed in position while achronal is describing a set of points in a spacetime, no two of which have timelike separation.

As a verb set

is to put (something) down, to rest.

As a noun set

is a punch for setting nails in wood.

As a proper noun Set

is an ancient Egyptian god, variously described as the god of chaos, the god of thunder and storms, or the god of destruction.