rheostat

English Thesaurus

1. resistor for regulating current (noun.artifact)

hypernym	:	resistance, resistor,
definition	:	an electrical device that resists the flow of electrical current (noun.artifact)

hyponym	:	dimmer,
definition	:	a rheostat that varies the current through an electric light in order to control the level of illumination (noun.artifact)

part holonym	:	contact arm, wiper, wiper arm,
definition	:	contact consisting of a conducting arm that rotates over a series of fixed contacts and comes to rest on an outlet (noun.artifact)