1. the space in the atmosphere immediately above the earth

Definition categories: location, space

2. the atmosphere above a nation that is deemed to be under its jurisdiction

- the plane was refused permission to enter Chinese airspace

Definition categories: location, air, atmosphere

Sentences with airspace as a noun:

- Various European countries transferred the aviation control of their adjoining airspace to Eurocontrol, while each retaining legal jurisdiction

- The legalisation of free radios caused a bitter fight for airspace.