| formales System | formal system |
| pyramidales System | pyramidal tract |
| Oktalsystem | octal numeral system |
| Formalismus | formalism |
| Formalist | formalist |
| Informationssystem | information system |
| formalisieren | denote |
| Agroforstsystem | agroforestry system |
| formale Sprache | formal language |
| normalerweise | normally |
| Dezimalsystem | decimal system |
| Atmungssystem | respiratory system |
| Dateisystem | file system |
| Notensystem | stave |
| Abgassystem | exhaust gas system exhaust system |
| Aufladesystem | charging system |
| Entladesystem | unload system |
| Larsen-System | Larsen's Opening Queen's Fianchetto Opening |
| Leitsystem | distributed control system |
| Nervensystem | nervous system |