pneumatic

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Of or relating to air or other gases.
• adjective Of or relating to pneumatics.
• adjective Run by or using compressed air.
• adjective Filled with air, especially compressed air.
• adjective Zoology Having cavities filled with air, as the bones of certain birds.
• adjective Of or relating to the pneuma; spiritual.

from The Century Dictionary.

• In theology, relating to the spirit or pneuma, as distinguished from both soul and body; spiritual. See soul and spirit.
• noun An inflatable rubber tire.
• noun A vehicle, as a bicycle, motor-cycle, or motorcar, lifted with inflatable rubber tires.
• Of or pertaining to air, or gases in general, or their properties; also, employing (compressed) air or other gas as a motive power, as, pneumatic experiments; a pneumatic engine.
• Consisting of or resembling air; having the properties of an elastic fluid; gaseous.
• Moved or played by means of air: as, a pneumatic instrument of music.
• In zoology: Filled with air; fitted to receive or contain air; pneumatized, as the air-cells or the bones of birds
• Of or pertaining to the respiratory system of any animal
• A caisson within which compressed air excludes the water, permitting necessary operations to be carried on inside it.
• noun In organ-building, one of the members of a pneumatic action, whether a bellows or a tube. See pneumatic action, above.
• noun Same as pneumatology, 2, where see quotation.

from the GNU version of the Collaborative International Dictionary of English.

• noun archaic A vehicle, as a bicycle, the wheels of which are fitted with pneumatic tires.
• adjective Consisting of, or resembling, air; having the properties of an elastic fluid; gaseous; opposed to dense or solid.
• adjective Of or pertaining to air, or to elastic fluids or their properties; pertaining to pneumatics.
• adjective Moved or worked by pressure or flow of air
• adjective (Biol.) Fitted to contain air; Having cavities filled with air
• adjective Adapted for containing compressed air; inflated with air.
• adjective (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.
• adjective a system of tubes, leading to various points, through which letters, packages, etc., are sent, by the flow and pressure of air.
• adjective a hoisting machine worked by compressed air.
• adjective a tubular pile or cylinder of large diameter sunk by atmospheric pressure.
• adjective an air-exhausting or forcing pump.
• adjective See Atmospheric railway, under Atmospheric.
• adjective 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.
• adjective 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.
• adjective See Pneumatic dispatch, above.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Of or relating to air or other gases
• adjective Of or relating to pneumatics
• adjective Powered by, or filled with compressed air
• adjective zoology Having cavities filled with air
• adjective Spiritual; Of or relating to the pneuma
• adjective of a woman well-rounded; full-breasted; bouncy (especially during sex)
• noun Gnosticism In gnostic theologian Valentinus' triadic grouping of man the highest type; a person focused on spiritual reality (the other two being hylic and psychic).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective of or relating to or using air (or a similar gas)