Airspace

Alternative forms

 * air space

Noun

 * 1)  A specified portion of the atmosphere, especially that under the technical aviation control and/or jurisdiction of a particular state over which territory (and territorial waters) it lies.
 * ''Various European countries transferred the aviation control of their adjoining airspace to Eurocontrol, while each retaining legal jurisdiction
 * 1)  A designated part of the sky for aircraft use.
 * 2)  Space (i.e. a few neighboring frequencies) available for broadcasting within a particular frequency band.
 * The legalisation of free radios caused a bitter fight for airspace.
 * 1) The portion of an enclosed area which contains air, especially breathable air.
 * 2)  The cavity in a cavity wall containing air for insulation.

Derived terms

 * dead-air space