| Sternmotor | radial engine |
| Sternentor | stargate |
| Steinmauer | stone wall |
| Steinrötel | common rock thrush |
| Sterndolde | masterwort |
| Sterntag | sidereal day |
| sternenlos | starless |
| Steinmetz | stonemason |
| Stereotyp | stereotype |
| stereotyp | stereotype |
| Sterndeuter | astrologer |
| Sternotomie | sternotomy |
| Iterator | iterator |
| Stirlingmotor | Stirling engine |
| Boxermotor | boxer engine |
| Heckmotor | rear engine |
| Senator | senator |
| Störfaktor | disruptive element |
| Torfmoor | peat bog |
| Ostermond | April |