rheostat

/ˌriəˈstæt/
IPA guide

Other forms: rheostats

Definitions of rheostat
  1. noun
    resistor for regulating current
    synonyms: variable resistor
    see moresee less
    types:
    dimmer
    a rheostat that varies the current through an electric light in order to control the level of illumination
    type of:
    resistance, resistor
    an electrical device that resists the flow of electrical current
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