potentiometer(redirected from variable resistor)
Also found in: Dictionary, Thesaurus, Legal, Financial, Acronyms, Encyclopedia, Wikipedia.
1. An instrument used for measuring small differences in electrical potential.
2. An electrical resistor of fixed total resistance between two terminals, but with a third terminal attached to a slider that can make contact at any desired point along the resistance.
[L. potentia, power, + G. metron, measure]
Farlex Partner Medical Dictionary © Farlex 2012
A mechanically adjusted resistance used as a calibration control on many instruments. It adjusts a voltage or current within the device.
Medical Dictionary, © 2009 Farlex and Partners