Rheostat
Rhe´o`stat Pronunciation: rē´ô`stăt
| n. | 1. | (Elec.) A contrivance for adjusting or regulating the strength of electrical currents, operating usually by the intercalation of resistance which can be varied at will. |
| Noun | 1. |  rheostat - resistor for regulating currentSynonyms: variable resistor |