from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Pressure caused by the weight of the atmosphere. At sea level it has a mean value of one atmosphere but reduces with increasing altitude.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics, meteorology The pressure caused by the
weightof the atmosphereabove an area.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the pressure exerted by the atmosphere
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