air space

American  

Also airspace

noun

1. a space occupied by air.

2. the amount of breathing air in a room or other enclosed space.

3. the region of the atmosphere above a municipality, state, or nation, over which it has jurisdiction.

4. the region of the atmosphere above a plot of ground, to which the owner has rights or access.

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Etymology

Origin of air space

First recorded in 1900–05

Example Sentences

“To those asking why haven’t I left, the air space is closed so nobody can go in or out,” she said.

From Los Angeles Times • Mar. 3, 2026

—In Asia, airline stocks suffered steep losses in Asia as various carriers announced flight suspensions due to air space closures.

From The Wall Street Journal • Mar. 2, 2026

Guinea-Bissau's air space, as well as land and sea borders, will be closed all day Sunday.

From Barron's • Nov. 23, 2025

Located in Virginia at the heart of the capital area, the airport has become exceptionally popular with travellers, but it faces numerous logistical challenges, such as congestion in the air space and shorter runways.

From BBC • Jan. 31, 2025

And beyond the parapet of the terrace was the air space over Forty-fourth Street.

From "Slaughterhouse-Five" by Kurt Vonnegut