| Bezugssystem | frame of reference reference frame |
| Atmungssystem | respiratory system |
| Bezugswort | antecedent |
| Bezugsrahmen | point of reference |
| Lüftungssystem | ventilation system |
| Währungssystem | currency system |
| Abgassystem | exhaust gas system exhaust system |
| Betriebssystem | operating system production system |
| Soundsystem | sound system |
| Zehnersystem | decimal |
| Binärsystem | binary system |
| Dezimalsystem | decimal system |
| Exosystem | exosystem |
| Immunsystem | immune system |
| Leitsystem | distributed control system |
| Nervensystem | nervous system |
| Schulsystem | school system |
| Subsystem | subsystem |
| Bezugselement | antecedent |
| Bezugnahme | reference |