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- DictionaryAir·space/ˈerˌspās/
noun
- 1. the air available to aircraft to fly in, especially the part subject to the jurisdiction of a particular country: "the airliner was refused permission to enter Maltese airspace"
noun
Airspace is the portion of the atmosphere controlled by a country above its territory, including its territorial waters or, more generally, any specific three-dimensional portion of the atmosphere. It is not the same as outer space which is the expanse or space outside the Earth and aerospace which is the general term for Earth's atmosphere and the outer space within the planet's vicinity. Wikipedia