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n. The portion of the atmosphere above a particular land area, especially that of a political subdivision such as a nation.

n. The space occupied by an aircraft.

n. A designated sector of space, such as that in the vicinity of an airport.

n. Chiefly British Space available for broadcasting within a particular frequency: "Mobile radio has to compete for air space with other services such as broadcast radio, television, and even military services” ( Financial Times).

n. See airtime.

n. A specified portion of the atmosphere, especially that under the technical aviation control and/or jurisdiction of a particular state over which territory (and territorial waters) it lies.

n. A designated part of the sky for aircraft use.

n. Space (i.e. a few neighboring frequencies) available for broadcasting within a particular frequency band.

n. The portion of an enclosed area which contains air, especially breathable air.

n. The cavity in a cavity wall containing air for insulation.

n. the atmosphere above a nation and deemed to be under its jurisdiction.

n. In ornithology, an air-cell of large size; an air-receptacle or a pneumatocyst (which see).

n. In medicine and sanitary science, the clear cubic contents of a room, as the ward of a hospital, with reference to the respirable air contained in it: as, air-space per man, so many cubic feet.

n. In firearms, a vacant space between the powder-charge and the projectile.

n. the space in the atmosphere immediately above the earth

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

n. the space in the atmosphere immediately above the earth

"On an average day within Canada and the United States, there are about 200,000 domestic flights, with another 1,500 flights inbound from overseas areas, so you can appreciate that surveillance of our airspace is an enormous task."

space    atmosphere    air   

dead-air space   

logistic    airlift    operational    logistical    airfield