Also known as: AT^
AT has various meanings in the Governmental & Military category. Discover the full forms, definitions, and usage contexts of AT in Governmental & Military.
Aircraft operating in the air or on the airport surface \nExample: Students practising circuit flying need to keep a very careful lookout especially at times when there is a lot of air traffic.
Governmental & MilitaryBetween one airborne aircraft and another.
Governmental & MilitaryGaseous envelope surrounding Earth Consists of two layers; the lower, or troposphere, and the upper, or stratosphere. Weight of atmosphere on each square inch of Earth's surface is approx 14.1 Ib at sea level. The Earth's atmosphere is 120 miles thick and is composed mainly of nitrogen, oxygen, carbon dioxide, and a few other trace gases.
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