The state of temperature and humidity produced by an air conditioner.
An air conditioner or system of air conditioners.
The portion of an enclosed area which contains air, especially breathable air.
that part of the sky designated for the sole use of aircraft.
The cavity in a cavity wall containing air for insulation.
Space (i.e. a few neighboring frequencies) available for broadcasting within a particular frequency band.
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.