| Strömungsabriss | stall |
| Stromanschluss | electrical connection |
| Strahlungsantrieb | forcing |
| stromabwärts | downstream |
| stromaufwärts | upstream |
| Stromantrieb | electric drive |
| Strömung | tide |
| Stradivarius | Stradivarius |
| Straußgras | bentgrass |
| Strommessgerät | ammeter |
| Stromstörer | baffle |
| Strontianit | strontianite |
| Strömungstransport | advection |
| Strahlungsdruck | radiation pressure |
| Stromkreis | electric circuit electrical circuit |
| Strommast | pylon |
| Stromstärke | current amperage electric current |
| Stromversorger | electricity supplier |
| Strömungsmechanik | fluid mechanics |
| Trennungsstrich | hyphen dividing line |