piezoelectricsensor
nounUK /piːˌeɪzəʊɪˈlɛktrɪk ˈsɛnsə/
US /piˌeɪzoʊɪˈlɛktrɪk ˈsɛnsər/
A tiny device that makes electricity when you press or squeeze it, and uses that to sense things.
The piezoelectric sensor in the drum pad turns each tap into an electrical signal.
OTHER MEANINGS
2. A component in touch-sensitive screens that detects finger pressure.
The phone's piezoelectric sensor registers how hard you press the screen.
3. A device in medical ultrasound machines that sends and receives sound waves.
The ultrasound probe uses a piezoelectric sensor to create images of the baby.
4. A sensor in musical instruments that picks up vibrations from strings or drumheads.
The acoustic guitar's piezoelectric sensor captures the string vibrations for amplification.