Definitions for "Varistor"
see Resistor, Variable.
A variable resistor. A device which does not have a linear resistance characteristic.
a component that changes resistance with the amount of voltage impressed across it
A surge suppression device used to absorb transients and spikes occurring on the power lines, thereby protect electronic equipment plugged into that line. Frequently, the term MOV (Metal Oxide Varistor) is used instead.