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air space

noun
1.
a space occupied by air.
2.
the amount of breathing air in a room or other enclosed space.
3.
the region of the atmosphere above a municipality, state, or nation, over which it has jurisdiction.
4.
the region of the atmosphere above a plot of ground, to which the owner has rights or access.
Also, airspace (for defs 3, 4).
Origin
1900-1905
1900-05
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for airspace

airspace

/ˈɛəˌspeɪs/
noun
1.
the atmosphere above the earth or part of the earth, esp the atmosphere above a country deemed to be under its jurisdiction
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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Encyclopedia Article for airspace

air space

in international law, the space above a particular national territory, treated as belonging to the government controlling the territory. It does not include outer space, which, under the Outer Space Treaty of 1967, is declared to be free and not subject to national appropriation. The treaty, however, did not define the altitude at which outer space begins and air space ends

Learn more about air space with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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