Definition and Meaning of AIR
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air means :
- The fluid which we breathe, and which surrounds the earth; the atmosphere. It is invisible, inodorous, insipid, transparent, compressible, elastic, and ponderable.
- Symbolically: Something unsubstantial, light, or volatile.
- A particular state of the atmosphere, as respects heat, cold, moisture, etc., or as affecting the sensations; as, a smoky air, a damp air, the morning air, etc.
- Any aeriform body; a gas; as, oxygen was formerly called vital air.
- Air in motion; a light breeze; a gentle wind.
- Odoriferous or contaminated air.
- That which surrounds and influences.
- Utterance abroad; publicity; vent.
- Intelligence; information.
- A musical idea, or motive, rhythmically developed in consecutive single tones, so as to form a symmetrical and balanced whole, which may be sung by a single voice to the stanzas of a hymn or song, or even to plain prose, or played upon an instrument; a melody; a tune; an aria.
- In harmonized chorals, psalmody, part songs, etc., the part which bears the tune or melody -- in modern harmony usually the upper part -- is sometimes called the air.
- The peculiar look, appearance, and bearing of a person; mien; demeanor; as, the air of a youth; a heavy air; a lofty air.
- Peculiar appearance; apparent character; semblance; manner; style.
- An artificial or affected manner; show of pride or vanity; haughtiness; as, it is said of a person, he puts on airs.
- The representation or reproduction of the effect of the atmospheric medium through which every object in nature is viewed.
- Carriage; attitude; action; movement; as, the head of that portrait has a good air.
- The artificial motion or carriage of a horse.
- To expose to the air for the purpose of cooling, refreshing, or purifying; to ventilate; as, to air a room.
- To expose to heat, for the purpose of expelling dampness, or of warming; as, to air linen; to air liquors.
- A sack or matters inflated with air, and used as a bed.
- An air sac, sometimes double or variously lobed, in the visceral cavity of many fishes. It originates in the same way as the lungs of air-breathing vertebrates, and in the adult may retain a tubular connection with the pharynx or esophagus.
- A sac or bladder full of air in an animal or plant; also an air hole in a casting.
- A railway brake operated by condensed air.
- A cavity in the cellular tissue of plants, containing air only.
- A receptacle of air in various parts of the system; as, a cell or minute cavity in the walls of the air tubes of the lungs; the air sac of birds; a dilatation of the air vessels in insects.
- A chamber or cavity filled with air, in an animal or plant.
- A cavity containing air to act as a spring for equalizing the flow of a liquid in a pump or other hydraulic machine.
- A faucet to allow escape of air.
- A drill driven by the elastic pressure of condensed air; a pneumatic drill.
- An engine driven by heated or by compressed air.
- See under Gas.
- A kind of gun in which the elastic force of condensed air is used to discharge the ball. The air is powerfully compressed into a reservoir attached to the gun, by a condensing pump, and is controlled by a valve actuated by the trigger.
- A hole to admit or discharge air; specifically, a spot in the ice not frozen over.
- A fault in a casting, produced by a bubble of air; a blowhole.
- A jacket having air-tight cells, or cavities which can be filled with air, to render persons buoyant in swimming.
- Spirit level. See Level.
- A pipe for the passage of air; esp. a ventilating pipe.
- A plant deriving its sustenance from the air alone; an aerophyte.
- An instrument to measure the weight of air.
- A kind of pump for exhausting air from a vessel or closed space; also, a pump to condense air or force it into a closed space.
- A pump used to exhaust from a condenser the condensed steam, the water used for condensing, and any commingled air.
- One of the spaces in different parts of the bodies of birds, which are filled with air and connected with the air passages of the lungs; an air cell.
- A passage, usually vertical, for admitting fresh air into a mine or a tunnel.
- A stove for heating a current of air which is directed against its surface by means of pipes, and then distributed through a building.
- A vessel, cell, duct, or tube containing or conducting air; as the air vessels of insects, birds, plants, etc.; the air vessel of a pump, engine, etc. For the latter, see Air chamber. The air vessels of insects are called tracheae, of plants spiral vessels.
Source: All the definitions provided here are from WordNet 3.0 by Princeton University
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