English word rheostat comes from English rheo- (Flow, current.), English -stat
| Dictionary entry | Language | Definition |
|---|---|---|
| rheo- | English (eng) | Flow, current. |
| -stat | English (eng) | Forming nouns naming scientific instruments that act to render the prefixed element stationary or static in some respect. |
| rheostat | English (eng) | An electrical resistor, with two terminals, whose resistance is continuously variable by moving a knob or slider. |