pneumatics

n. branch of physics dealing with mechanical properties of air and gases

Pneumatics is the use of pressurized air to effect mechanical motion. Pneumatics is employed in a variety of settings. In dentistry applications, pneumatic drills are lighter, faster, and simpler than an electric drill of the same power rating (because the prime mover, the compressor, is separate from the drill and pumped air is capable of rotating the drill bit at extremely high rpm). Pneumatic transfer systems are employed in many industries to move powders and devices. Pneumatic tubes can carry objects over distances. Pneumatic devices are also used where electric motors cannot be used for safety reasons, such as deep in a mine where explosive dust or gases may be present.
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Noun
1. the branch of mechanics that deals with the mechanical properties of gases
(hypernym) mechanics

(n.)
The scientific study or knowledge of spiritual beings and their relations to God, angels, and men.
  

(n.)
That branch of science which treats of the mechanical properties of air and other elastic fluids, as of their weight, pressure, elasticity, etc. See Mechanics.
  

Synonyms and related words:
aerial photography, aeroballistics, aerodynamics, aerogeology, aerography, aerology, aeromechanics, aeromedicine, aerometry, aeronautical meteorology, aerophotography, aerophysics, aeroscopy, aerospace research, aerostatics, air, anemology, atmosphere, aviation technology, avionics, barometry, climatography, climatology, fluid, forecasting, gas, halogen gas, hydrostatics, inert gas, kinematics, kinetics, long-range forecasting, meteorology, microclimatology, nephology, photometry, rocketry, supersonics, weatherology