Noun
the pressure exerted by the atmosphere
Source: WordNetA flexible diaphragm forms one side of the fuel chamber and is arranged so that as fuel is drawn out into the engine, the diaphragm is forced inward by ambient air pressure. Source: Internet
Also, maybe it was because of the air pressure, our ears were in great pain, really painful,’ the employee said. Source: Internet
An outward opening hatch on the MIR space station failed after it swung open too fast after unlatching, because of a small amount of air pressure remaining in the airlock. citation A different entry was used, and the hatch repaired. Source: Internet
A vacuum pump is turned on, and air pressure pushes down on the coversheet to hold the material in place. Source: Internet
All of von Guericke's work on the vacuum and air pressure is described in Book III of the Experimenta Nova (1672). Source: Internet
As air pressure from the mouth increases, the amount the reed vibrates increases until the reed hits the mouthpiece. Source: Internet