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Comprehensive
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air conditioning a system that circulates cooled and dehumidified air in a building, car, or other space.
air-cooled cooled by circulating air, as an engine. [2 definitions]
aircraft any man-made vehicle that can fly through the air, such as an airplane, helicopter, glider, or balloon.
air curtain a draft of compressed air blown continuously across a doorway, usu. downward, to act as a door in maintaining interior temperature.
air-dry to allow to dry by the process of evaporation into the air rather than by the use of an appliance. [2 definitions]
airflow a flow of air, esp. around a moving vehicle, missile, or the like.
air force the aviation branch of a nation's military forces, or one of the units under an air command.
air-fuel pertaining to the air and fuel injected at the same time into a combustion engine.
air gun a gun that is operated by compressed air and usu. fires small pellets. [2 definitions]
air hole an opening for the intake or discharge of air or gas. [2/3 definitions]
airing an exposure to air or wind, so as to refresh or dry. [1/3 definitions]
airless lacking air or fresh air; stuffy. [2 definitions]
airlift the systematic transportation of people or supplies by air when ground routes are impossible or dangerous to use, esp. in a battle zone or during an emergency. [1/2 definitions]
airline a system of transportation by air offering scheduled flights between various points, or a business that owns and operates the equipment required by such a system. [2 definitions]
air lock an airtight compartment in which the air pressure can be regulated, usu. situated between two areas that have different air pressures, as in underwater operations. [2 definitions]
airmail of, pertaining to, or intended for use with mail sent by air. [5 definitions]
airman in the U.S. Air Force, an enlisted person of one of the four lowest ranks. [1/3 definitions]
air mass a body of air that covers a wide area and has little horizontal variation in temperature, pressure, or moisture.
air mattress a mattress filled with air, used esp. for camping, mobile living, or as an extra bed for visitors.
airplane any of various aircraft that are heavier than air and are driven by propellers or jet engines.
air pocket a downward air current that can cause an abrupt change, usu. a drop, in an aircraft's altitude.