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partial vacuum

noun
1.
an enclosed space from which part of the air or another gas has been removed.
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for partial vacuum
  • As the superheated air cools it produces a resonating tube of partial vacuum surrounding the lightning's path.
  • But the air on the bottom still strikes the underside of the wing, pushes it up into the partial vacuum and then bounces down.
  • At these times, to keep the ratio of fuel to oxygen optimized, a partial vacuum is created in the chamber.
  • The flask with a proper cover must be sufficiently strong to withstand a partial vacuum.
  • Unless this air is replaced, the room or building can come under negative pressure, or partial vacuum.
  • The downward moving piston in a piston engine or the compressor in a jet engine forms a partial vacuum in the intake.
  • Adiabatic expansion in the partial vacuum cools the air.
  • Distortion of the sediment during the tube insertion is minimized by the application of a partial vacuum to the tube top.
  • The vacuum pump continued to hold the partial vacuum until constant weight was once again achieved.
  • After press is completed, any downward movement of the sample creates a partial vacuum, which holds the sample in the tube.

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