| Zentralnervensystem | central nervous system |
| Nervensystem | nervous system |
| Entladesystem | unload system |
| Federal Reserve System | Federal Reserve System |
| Zehnersystem | decimal |
| Planetensystem | planetary system |
| Zentralschlüssel | master key |
| Managementsystem | management system |
| Koordinatensystem | coordinate system |
| Periodensystem | periodic table |
| Sonnensystem | solar system Solar System |
| Zahlensystem | number system |
| Zeichensystem | sign system |
| Sternsystem | star system |
| Untersystem | sub-system |
| Antiblockiersystem | antilock brake system antilock braking system |
| Betriebssystem | operating system production system |
| Zwanzigersystem | vigesimal system |
| Zentralafrikaner | Central African |
| zentraleuropäisch | Central European |