[speys-tahym] 
| 1. | Also called space-time continuum. the four-dimensional continuum, having three spatial coordinates and one temporal coordinate, in which all physical quantities may be located. |
| 2. | the physical reality that exists within this four-dimensional continuum. |
| 3. | of, pertaining to, or noting a system with three spatial coordinates and one temporal coordinate. |
| 4. | noting, pertaining to, or involving both space and time: a space-time problem. |
The four-dimensional continuum in which all objects are located and all events occur, viewed as a single and continuous framework for existence. Space-time consists of length, width, depth, and time.