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The science which treats of the air and other gaseous bodies under the action of force, and of their mechanical effects.

r arched surface for sustaining bodies by its movement through the air; a spread wing, as of a bird.

The science which treats of the properties of the air, and of the part it plays in nature. Craig.

A description of the air or atmosphere; aërology.

A cannon capable of being trained at very high angles for use against aircraft.

Acting by the force of air and water; as, an aërohydrodynamic wheel.

The science of aërolites.

Of or pertaining to aërolites; meteoric; as, aërolitic iron. Booth.

Of or pertaining to aërology.

That department of physics which treats of the atmosphere.

Divination from the state of the air or from atmospheric substances; also, forecasting changes in the weather.

Of or pert. to aëromechanics.

A mechanic or mechanician expert in the art and practice of aëronautics.

The science of equilibrium and motion of air or an aëriform fluid, including aërodynamics and aërostatics.

An instrument for ascertaining the weight or density of air and gases.

Of or pertaining to aërometry; as, aërometric investigations.

The science of measuring the air, including the doctrine of its pressure, elasticity, rarefaction, and condensation; pneumatics.

The science or art of ascending and sailing in the air, as by means of a balloon; aërial navigation; ballooning.

Dread of a current of air.

An instrument, proposed by Edison, for greatly intensifying speech. It consists of a phonograph diaphragm so arranged that its action opens and closes valves, producing synchronous air blasts sufficient to operate a larger diaphragm with greater amplitude of vibration.