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air pocket

noun
1.
(not in technical use) a nearly vertical air current that can cause an aircraft to experience a sudden change in altitude, usually a decrease.
Also called air hole.
Origin
1910-1915
1910-15
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for air pocket
  • Water was up to the ceiling tiles, but there was an air pocket in the crawl space.
  • But the air pocket left pollutants with no escape route.
  • The low-pressure air pocket then pulls the blade toward it, causing the rotor to turn.
  • As the air in the claw hook is compressed by the rotation of the claw, it is transformed into a high-pressure air pocket.
  • Prior to nets being deployed, a bullet float was placed in the cod end of each net to provide an air pocket.
  • The air pocket prevented the inadvertent killing of non-targeted species, such as turtles.
  • Plunging breakers have a curling crest that moves over an air pocket.
  • The five-foot concrete dam was built with an overhanging metal lip that creates a dead air pocket under the waterfall.
  • At the end of the process, the compressed air pocket expands, carrying excess preservative from the wood.
  • Check static head to determine if it is sufficient to push air pocket back to pumps, and check volume of gas pocket.
British Dictionary definitions for air pocket

air pocket

noun
1.
a localized region of low air density or a descending air current, causing an aircraft to suffer an abrupt decrease in height
2.
any pocket of air that prevents the flow of a liquid or gas, as in a pipe
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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3
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