Elec. any of various devices for measuring, comparing, or controlling electric potentials; specif., a kind of resistor that can be varied, as in a rotary device used to control the volume of a radio, TV, etc.
Origin of potentiometerfrom potential + -meter
- A three-terminal resistor with a manually adjustable center connection that adjusts the resistance between the end terminals and the center, whose uses include controlling the volume of an amplifier. Also called pot 3.
- An instrument for measuring an unknown voltage by comparison to a standard voltage.
Origin of potentiometerpotenti(al) -meter