Is time the fourth dimension?

True

in physics the dimensions of space are:

1. Height

2. Width

3. Depth

4. Time

5. Kaluza - this is the combination of gravity and electromagnetism

6.-10. Other theories

11. The M-theory.

As the current studies suggest, the theory of everything or M-theory claims that there are currently 11 dimensions in the universe, unique for each world and that our word is but the complexities of strings.