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an enclosed space from which part of the air or another gas has been removed.
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for
As the superheated air cools it produces a resonating tube of
surrounding the lightning's path.
But the air on the bottom still strikes the underside of the wing, pushes it up into the
and then bounces down.
At these times, to keep the ratio of fuel to oxygen optimized, a
is created in the chamber.
The flask with a proper cover must be sufficiently strong to withstand a
Unless this air is replaced, the room or building can come under negative pressure, or
The downward moving piston in a piston engine or the compressor in a jet engine forms a
in the intake.
Adiabatic expansion in the
cools the air.
Distortion of the sediment during the tube insertion is minimized by the application of a
to the tube top.
The vacuum pump continued to hold the
until constant weight was once again achieved.
After press is completed, any downward movement of the sample creates a
, which holds the sample in the tube.
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