Dimension

In the field of basic physics, a dimension is described as one of the three basic directions an individual can travel from a specific point, namely: height, width, and length, with the fourth dimension being time. These four dimensions make up the realm of space. Or, "space-time", as scientists have come to refer this dimensional existence. 

It is believed that beyond the universe itself, few things, like other dimensions and higher levels of being exist. Unfortunately, during the 23rd century, the existence of these concepts could not be proven logically. 

The Androids of planet Mudd had an advanced understanding of dimensions, having formulated computations that would inevitably lead to a total description of the parabolic intersection of dimension with dimension. 

The mirror universe coexists with our universe, but on a different dimensional plane. It was later determined that the dimensional structure of each universe was totally dissimilar, and that any use of power would disturb its structure. 

The galactic creation point extends through space and time into another dimension where the logic of things was totally different, where magic, the ability to control reality with thoughts, was part of the laws of nature. 

According to Spock, the antimatter universe-as well as the negative universe-occupy the same space, as our universe, but in different dimensions. 

The planet Meridian has a dual existence, appearing in both the Gamma Quadrant of our universe, and another dimension that intersects with this one at that point. 

Fluidic space, along with the Q Continuum, both lie in an extra-dimensional realm.