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

Court records suggest that Zhou was aware that flying into the base’s air space was forbidden.

From Los Angeles Times • Dec. 11, 2024

Now they would see what Ebola could do naturally in a population of monkeys living in a confined air space, in a kind of city, as it were.

From "The Hot Zone" by Richard Preston