atmospheric pressure



Cars & Driving

  • noun pressure exerted by the atmosphere at the earth’s surface


  • The pressure (14.7 psi) exerted by the earth's atmosphere at sea level under standard conditions.


  • The pressure which the atmosphere exerts at any given point within it. This pressure is due to the weight of the gases that compose it. Also called barometric pressure.
  • A pressure equal to exactly 1 atmosphere, which is equal to 101.325 kilopascals, 1013.25 millibars, or 760 millimeters of mercury.