airspace
air space

In 1994 the 7N10 design was improved by filling the air space with lead.

They cannot transfer the church's air space to their site without also having the club's.

There's limited air space to play these on the radio.

There was only a thin wedge of air space left in the room.

"Our presence in its air space seems to have triggered it."

If possible, though, an air space of an inch or two between the appliances would be a good idea.

I guess it'll be made in the air space probably above Belgium.

Restricting the use of military air space would also make a significant difference.

We also support the need for the military to give up some of their air space.

Both countries banned each other's planes from their air space.