Air word meaning and definition

[noun] travel via aircraft; "air travel involves too much waiting in airports"; "if you've time to spare go by air"
[noun] a distinctive but intangible quality surrounding a person or thing; "an air of mystery"; "the house had a neglected air"; "an atmosphere of defeat pervaded the candidate's headquarters"; "the place had an aura of romance"
[noun] medium for radio and television broadcasting; "the program was on the air from 9 til midnight"; "the president used the airwaves to take his message to the people"
[noun] a succession of notes forming a distinctive sequence; "she was humming an air from Beethoven"
[noun] the region above the ground; "her hand stopped in mid air"; "he threw the ball into the air"
[noun] a slight wind (usually refreshing); "the breeze was cooled by the lake"; "as he waited he could feel the air on his neck"
[noun] a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air"
[noun] (archaic) once thought to be one of four elements composing the universe (Empedocles)
[verb] expose to cool or cold air so as to cool or freshen; "air the old winter clothes"; "air out the smoke-filled rooms"
[verb] expose to warm or heated air, so as to dry; "Air linen"
[verb] make public; "She aired her opinions on welfare"
[verb] broadcast over the airwaves, as in radio or television; "We cannot air this X-rated song"
[verb] be broadcast; "This show will air Saturdays at 2 P.M."
[verb] expose to fresh air, as of old clothing; "aerate your old sneakers"

\Air\ ([^a]r), n. [OE. air, eir, F. air, L. a["e]r, fr. Gr. 'ah`r, air, mist, for 'a[digamma]hr, fr. root 'a[digamma] to blow, breathe, probably akin to E. wind. In sense 10 the French has taking a meaning fr. It. aria atmosphere, air, fr. the same Latin word; and in senses 11, 12, 13 the French meaning is either fr. L. aria, or due to confusion with F. aire, in an older sense of origin, descent. Cf. {A["e]ry}, {Debonair}, {Malaria}, {Wind}.] 1. The fluid which we breathe, and which surrounds the earth; the atmosphere. It is invisible, inodorous, insipid, transparent, compressible, elastic, and ponderable. Note: By the ancient philosophers, air was regarded as an element; but modern science has shown that it is essentially a mixture of oxygen and nitrogen, with a small amount of carbon dioxide, the average proportions being, by volume: oxygen, 20.96 per cent.; nitrogen, 79.00 per cent.; carbon dioxide, 0.04 per cent. These proportions are subject to a very slight variability. Air also always contains some vapor of water. 2. Symbolically: Something unsubstantial, light, or volatile. ``Charm ache with air.'' --Shak. He was still all air and fire. [Air and fire being the finer and quicker elements as opposed to earth and water.] --Macaulay . 3. 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. 4. Any a["e]riform body; a gas; as, oxygen was formerly called vital air. [Obs.] 5. Air in motion; a light breeze; a gentle wind. Let vernal airs through trembling osiers play. --Pope. 6. Odoriferous or contaminated air. 7. That which surrounds and influences. The keen, the wholesome air of poverty. --Wordsworth. 8. Utterance abroad; publicity; vent. You gave it air before me. --Dryden. 9. Intelligence; information. [Obs.] --Bacon. 10. (Mus.)
(a) 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.
(b) 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. 11. The peculiar look, appearance, and bearing of a person; mien; demeanor; as, the air of a youth; a heavy air; a lofty air. ``His very air.'' --Shak. 12. Peculiar appearance; apparent character; semblance; manner; style. It was communicated with the air of a secret. --Pope. 12. pl. An artificial or affected manner; show of pride or vanity; haughtiness; as, it is said of a person, he puts on airs. --Thackeray. 14. (Paint.)
(a) The representation or reproduction of the effect of the atmospheric medium through which every object in nature is viewed. --New Am. Cyc.
(b) Carriage; attitude; action; movement; as, the head of that portrait has a good air. --Fairholt. 15. (Man.) The artificial motion or carriage of a horse. Note: Air is much used adjectively or as the first part of a compound term. In most cases it might be written indifferently, as a separate limiting word, or as the first element of the compound term, with or without the hyphen; as, air bladder, air-bladder, or airbladder; air cell, air-cell, or aircell; air-pump, or airpump. {Air balloon}. See {Balloon}. {Air bath}.
(a) An apparatus for the application of air to the body.
(b) An arrangement for drying substances in air of any desired temperature. {Air castle}. See {Castle in the air}, under {Castle}. {Air compressor}, a machine for compressing air to be used as a motive power. {Air crossing}, a passage for air in a mine. {Air cushion}, an air-tight cushion which can be inflated; also, a device for arresting motion without shock by confined air. {Air fountain}, a contrivance for producing a jet of water by the force of compressed air. {Air furnace}, a furnace which depends on a natural draft and not on blast. {Air line}, a straight line; a bee line. Hence {Air-line}, adj.; as, air-line road. {Air lock} (Hydr. Engin.), an intermediate chamber between the outer air and the compressed-air chamber of a pneumatic caisson. --Knight. {Air port} (Nav.), a scuttle or porthole in a ship to admit air. {Air spring}, a spring in which the elasticity of air is utilized. {Air thermometer}, a form of thermometer in which the contraction and expansion of air is made to measure changes of temperature. {Air threads}, gossamer. {Air trap}, a contrivance for shutting off foul air or gas from drains, sewers, etc.; a stench trap. {Air trunk}, a pipe or shaft for conducting foul or heated air from a room. {Air valve}, a valve to regulate the admission or egress of air; esp. a valve which opens inwardly in a steam boiler and allows air to enter. {Air way}, a passage for a current of air; as the air way of an air pump; an air way in a mine. {In the air}.
(a) Prevalent without traceable origin or authority, as rumors.
(b) Not in a fixed or stable position; unsettled.
(c) (Mil.) Unsupported and liable to be turned or taken in flank; as, the army had its wing in the air. {To take air}, to be divulged; to be made public. {To take the air}, to go abroad; to walk or ride out.
\Air\ ([^a]r), v. t. [imp. & p. p. {Aired} ([^a]rd); p. pr. & vb. n. {Airing}.] [See {Air}, n., and cf. {A[eum]rate}.] 1. To expose to the air for the purpose of cooling, refreshing, or purifying; to ventilate; as, to air a room. It were good wisdom . . . that the jail were aired. --Bacon. Were you but riding forth to air yourself. --Shak. 2. To expose for the sake of public notice; to display ostentatiously; as, to air one's opinion. Airing a snowy hand and signet gem. --Tennyson. 3. To expose to heat, for the purpose of expelling dampness, or of warming; as, to air linen; to air liquors.

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