noun

airspace

airspace

The plane entered restricted airspace.

The plane entered restricted airspace.

((noun)) the air above a country, considered as its territory The plane entered restricted airspace.

Synonyms: sky, atmosphere

From 'air' + 'space'. The space in the air above a country.

Think of it as a country's territory or property, but in the 'space' in the 'air' above it.

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