| Sekundärquelle | secondary source |
| Sekundärwald | second-growth forest |
| Sekundärtugend | secondary virtue |
| Zündquelle | ignition source source of ignition |
| Sekundarstufe II | sixth form |
| sekundär | secondary |
| Primärquelle | primary source |
| Fehlerquelle | source of error |
| Punktquelle | point source |
| Bezugsquelle | source of supply |
| Sekundant | second |
| Sekundenzeiger | second hand |
| Sekunde | second |
| Sekundenkleber | superglue |
| sekundieren | second |
| soundsovielte | umpteenth |
| Seehundfell | seal fur |
| Seehundsfell | seal fur |
| Stundenmeile | miles per hour |
| Gendarmerie | gendarmerie |