Piezo is derived from the Greek πιέζω, which means to squeeze or press, and may refer to: PIEZO1, a mechanosensitive ion protein Piezoelectric pickups for guitars and other musical instruments Piezoelectric sensor, a device that converts differences in physical force to generate voltage Piezoelectric speaker, a type of small loudspeaker Piezoelectricity, electrical charge built up in response to mechanical stress Piezometer, a device that measures the pressure of groundwater at a certain point Piezoresistive effect, a change in the electrical resistance of a material in response to mechanical stress Piezorina, a genus of South American bird Micro Piezo, a print head technology developed by Epson Piezo ignition, an ignition method based on the piezoelectric effect See also Pez (disambiguation) Pie (disambiguation)