[1] : The Collaborative International Dictionary of English v.0.48

pneumatic \pneumat"ic\, pneumatical \pneumat"ical\, a. l.
   pneumaticus, gr. ?, fr. ?, ?, wind, air, ? to blow, breathe;
   cf. ohg. fnehan: cf. f. pneumatique. cf. pneumonia.
   1. consisting of, or resembling, air; having the properties
      of an elastic fluid; gaseous; opposed to dense or solid.
      1913 webster

            the pneumatical substance being, in some bodies, the
            native spirit of the body.            --bacon.
      1913 webster

   2. of or pertaining to air, or to elastic fluids or their
      properties; pertaining to pneumatics; as, pneumatic
      experiments. "pneumatical discoveries." --stewart.
      1913 webster

   3. moved or worked by pressure or flow of air; as, a
      pneumatic instrument; a pneumatic engine.
      1913 webster

   4. biol. fitted to contain air; having cavities filled with
      air; as, pneumatic cells; pneumatic bones.
      1913 webster

   5. adapted for containing compressed air; inflated with air;
      as, a pneumatic cushion; a pneumatic tire, a tire formed
      of an annular tube of flexible fabric, as india rubber,
      suitable for being inflated with air.
      webster 1913 suppl.

   pneumatic action, or pneumatic lever mus., a
      contrivance for overcoming the resistance of the keys and
      other movable parts in an organ, by causing compressed air
      from the wind chest to move them.

   pneumatic dispatch, a system of tubes, leading to various
      points, through which letters, packages, etc., are sent,
      by the flow and pressure of air.

   pneumatic elevator, a hoisting machine worked by compressed
      air.

   pneumatic pile, a tubular pile or cylinder of large
      diameter sunk by atmospheric pressure.

   pneumatic pump, an air-exhausting or forcing pump.

   pneumatic railway. see atmospheric railway, under
      atmospheric.

   pneumatic syringe, a stout tube closed at one end, and
      provided with a piston, for showing that the heat produced
      by compressing a gas will ignite substances.

   pneumatic trough, a trough, generally made of wood or sheet
      metal, having a perforated shelf, and used, when filled
      with water or mercury, for collecting gases in chemical
      operations.

   pneumatic tube. see pneumatic dispatch, above.
      1913 webster
see also:
pneumonia pneumatic action pneumatic lever pneumatic dispatch pneumatic elevator pneumatic pile 
pneumatic pump pneumatic railway atmospheric railway atmospheric pneumatic syringe 
pneumatic trough pneumatic tube 

Dispatch >> D Words
Dispatch, definition of term: Dispatch
dispatch_pag1.html

Pneumatic >> P Words
Pneumatic, definition of term: Pneumatic
pneumatic_pag1.html

Pneumatic Tube >> P Words
Pneumatic Tube, definition of term: Pneumatic Tube
pneumatic+tube_pag1.html

Pneumatic Pump >> P Words
Pneumatic Pump, definition of term: Pneumatic Pump
pneumatic+pump_pag1.html

Pneumatic Drill >> P Words
Pneumatic Drill, definition of term: Pneumatic Drill
pneumatic+drill_pag1.html

Pneumatic Hamme >> P Words
Pneumatic Hamme, definition of term: Pneumatic Hamme
pneumatic+hamme_pag1.html