'Potentiometer' definitions:

Definition of 'potentiometer'

From: WordNet
noun
A measuring instrument for measuring direct current electromotive forces
noun
A resistor with three terminals, the third being an adjustable center terminal; used to adjust voltages in radios and TV sets [syn: potentiometer, pot]

Definition of 'Potentiometer'

From: GCIDE
  • Potentiometer \Po*ten`ti*om"e*ter\, n. [Potential + -meter.] (Elec.) An instrument for measuring or comparing electrial potentials or electro-motive forces. [1913 Webster]