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air pressure

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noun
  1. the force exerted by air, whether compressed or unconfined, on any surface in contact with it.
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Origin of air pressure

First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for air pressure

Historical Examples

  • An air-pressure is then produced in the tank with a bicycle pump.

    Boys' Book of Model Boats

    Raymond Francis Yates

  • He had closed the outer panel; the air-pressure in the lock was rising.

  • Their only purpose was to get the piston lifted, and air-pressure did all the actual work.

  • He entered the air-lock and shut the first door when the air-pressure was right.

    The Victor

    Bryce Walton

  • This is because the air-pressure is less on the mountain top than in the valley.

    The Story of Great Inventions

    Elmer Ellsworth Burns