overpressure noun. [ǝʊvǝ'prɛʃǝ, 'ǝʊvǝprɛʃǝ] M17.
[from OVER- + PRESSURE noun.]
1. Excessive pressure; esp. subjection to excessive pressure of work. M17.

2. Pressure (of a fluid) in excess of that normal or allowed for; spec. the difference between the (highest) instantaneous pressure at a point subjected to a shock wave and the ambient atmospheric pressure. M20.

[TahlilGaran] English Dictionary ▲