| Sechsersystem | senary |
| Zehnersystem | decimal |
| Schulsystem | school system |
| Zeichensystem | sign system |
| Sechsfüßler | hexapod |
| sechserlei | six |
| Abwassersystem | sewage system sewerage wastewater system |
| Untersystem | sub-system |
| Zweiersystem | binary numeral system |
| Nervensystem | nervous system |
| Schriftsystem | writing system |
| Sonnensystem | solar system Solar System |
| Sternsystem | star system |
| Zahlensystem | number system |
| Sechserpack | six pack |
| Sechspass | sexfoil |
| Sechstel | sixth |
| sechstel | sixth |
| Sechzehntel | sixteenth |
| sechsseitig | six-sided |