| Answer | Crossword Clue |
|---|---|
| THESPACETIMECONTINUUM | Four-dimensional system. |
| HYPERSPACE | Four-dimensional realm |
| OMNIVERSE | Cosmologist's four-dimensional realm |
| TESSERACT | Four-dimensional analogue of a cube |
| SPACE | Part of a four-dimensional continuum. |
| TRAC | Control ... (four-wheel-drive system) |
| TRAC | All-... (four-wheel-drive system on old Toyotas) |
