General literature speaks about three dimensions and time therefor astating difference nl. space and time (later on put together:spacetime). furthermore if spoken about a hypercube "..it's a cube in the fourth dimension..." actually meant is D5. And up to D9 you can probable visualize mentally.
The different orders of dimensions refer to the number of axes or directions in which an object can move. In three-dimensional space, an object can move in three directions (x, y, and z axes), while in two-dimensional space, an object can only move in two directions (x and y axes).
The number of dimensions is a subject of debate and depends on the context. In physics, there are three dimensions (length, width, and height), while in mathematics, there can be any number of dimensions, including infinite dimensions.
It is challenging for humans to visualize dimensions higher than three. However, mathematicians use tools such as graphs and projections to help them understand and visualize higher dimensions.
The fourth dimension is often referred to as time. In physics, time is considered the fourth dimension, and it is necessary to fully describe the physical state of an object in three-dimensional space.
There are many theories and speculations about the existence of dimensions beyond the fourth dimension. Some theories, such as string theory, suggest the existence of 10 or 11 dimensions. However, these dimensions are not directly observable and are still being studied and explored by scientists.