(mechanics) A unit of pressure equal to 1 sthène per square meter, or to 1000 pascals. Abbreviated pz.
pressure. Symbol pz. Metric-m.t.s. 1919 That which, applied over an area of 1 square metre, produces a force of 1 sthene; = 1 kPa. The hectopièze (100 pz) is the bar.