airspace

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Other spellings

air space

Word parts

air + space

Noun

Singular
airspace

Plural
airspaces

(countable) An airspace is a special part of the atmosphere that is often under the jurisdiction of the land below it.
(countable) An airspace is a part of the sky that is set aside for use by aircraft.
The airplane had instructions to only fly in the airspace above the state of Kentucky.