01 n. A vehicle, as a bicycle, the wheels of which are fitted with pneumatic tires.
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1.
A vehicle, as a bicycle, the wheels of which are fitted with pneumatic tires.[archaic]
Entry
6 senses · 2 variants
Webster, 1913
Pneumatic
02 a. Consisting of, or resembling, air; having the properties of an elastic fluid; gaseous; opposed to dense or solid.
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1.
Consisting of, or resembling, air; having the properties of an elastic fluid; gaseous; opposed to dense or solid.“The pneumatical substance being, in some bodies, the native spirit of the body.” — Bacon.
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2.
Of or pertaining to air, or to elastic fluids or their properties; pertaining to pneumatics; as, pneumatic experiments.
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3.
Moved or worked by pressure or flow of air; as, a pneumatic instrument; a pneumatic engine.
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4.
Fitted to contain air; Having cavities filled with air; as, pneumatic cells; pneumatic bones.(Biol.)
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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.
Phrases & compounds
Pneumatic action —
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 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.