piezoelectric crystal
Noun
Meaning
a crystal that can be used as a transducer
Source: WordNetHypernyms
Hyponyms
Examples
In most piezoelectric motors, the piezoelectric crystal is excited by a sine wave signal at the resonant frequency of the motor.
Two common LC oscillator circuits, the Hartley and Colpitts oscillators *In a crystal oscillator circuit the filter is a piezoelectric crystal (commonly a quartz crystal ).