airspace

See also: air space

English

Alternative forms

Etymology

From air +‎ space.

Pronunciation

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Noun

airspace (countable and uncountable, plural airspaces)

  1. (politics, aviation) 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.
    Holonym: aerospace (not synonymous)
    Various European countries transferred the aviation control of their adjoining airspace to Eurocontrol, while each retaining legal jurisdiction.
    • 2020 March 25, “Network News: Railway working with government to combat crisis”, in Rail, page 7:
      Haines has previous experience of dealing with a hugely disruptive crisis. He said: "I left the railway in 2008 and went to the Civil Aviation Authority. And within a few months I was in the middle of an Icelandic volcanic storm. Eyafjallajokull closed airspace across northern Europe.
    • 2025 June 26, Kasra Naji, “When Iran's supreme leader emerges from hiding he will find a very different nation”, in BBC‎[1]:
      During the war, Israel quickly took control of much of Iran's airspace, and attacked its military infrastructure. Top commanders of the Revolutionary Guard and the army were swiftly killed.
  2. (aviation) that part of the sky designated for the sole use of aircraft.
  3. (broadcasting) 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.
  4. The portion of an enclosed area which contains air, especially breathable air.
  5. (construction) The cavity in a cavity wall containing air for insulation.

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