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From: DICT.TW English-Chinese Dictionary 英漢字典

 air bath
 空氣浴

From: Webster's Revised Unabridged Dictionary (1913)

 Va·por n.  [Written also vapour.]
 1. Physics Any substance in the gaseous, or aeriform, state, the condition of which is ordinarily that of a liquid or solid.
 Note:The term vapor is sometimes used in a more extended sense, as identical with gas; and the difference between the two is not so much one of kind as of degree, the latter being applied to all permanently elastic fluids except atmospheric air, the former to those elastic fluids which lose that condition at ordinary temperatures. The atmosphere contains more or less vapor of water, a portion of which, on a reduction of temperature, becomes condensed into liquid water in the form of rain or dew. The vapor of water produced by boiling, especially in its economic relations, is called steam.
    Vapor is any substance in the gaseous condition at the maximum of density consistent with that condition. This is the strict and proper meaning of the word vapor.   --Nichol.
 2. In a loose and popular sense, any visible diffused substance floating in the atmosphere and impairing its transparency, as smoke, fog, etc.
    The vapour which that fro the earth glood [glided].   --Chaucer.
    Fire and hail; snow and vapors; stormy wind fulfilling his word.   --Ps. cxlviii. 8.
 3. Wind; flatulence. [Obs.]
 4. Something unsubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting.
    For what is your life? It is even a vapor, that appeareth for a little time, and then vanisheth away.   --James iv. 14.
 5. pl. An old name for hypochondria, or melancholy; the blues. “A fit of vapors.”
 6. Pharm. A medicinal agent designed for administration in the form of inhaled vapor.
 Vapor bath. (a) A bath in vapor; the application of vapor to the body, or part of it, in a close place; also, the place itself. (b) Chem. A small metallic drying oven, usually of copper, for drying and heating filter papers, precipitates, etc.; -- called also air bath. A modified form is provided with a jacket in the outside partition for holding water, or other volatile liquid, by which the temperature may be limited exactly to the required degree.
 Vapor burner, a burner for burning a vaporized hydrocarbon.
 Vapor density Chem., the relative weight of gases and vapors as compared with some specific standard, usually hydrogen, but sometimes air. The vapor density of gases and vaporizable substances as compared with hydrogen, when multiplied by two, or when compared with air and multiplied by 28.8, gives the molecular weight.
 Vapor engine, an engine worked by the expansive force of a vapor, esp. a vapor other than steam.

From: Webster's Revised Unabridged Dictionary (1913)

 Air n.
 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.”
    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 aëriform 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.]
 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.”
 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.
 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.
 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.
 on the air, currently transmitting; live; -- used of radio and television broadcasts, to indicate that the images and sounds being picked up by cameras and microphones are being broadcast at the present moment.
 Note: In call-in programs where individuals outside a radio or television studio have telephoned into the station, when their voice is being directly broadcast, the host of the program commonly states “You're on the air.” as a warning that the conversation is not private.
 To take air, to be divulged; to be made public.
 To take the air, to go abroad; to walk or ride out.