• WordNet 3.6
    • n vapor the process of becoming a vapor
    • n vapor a visible suspension in the air of particles of some substance
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: If someone were to capture and bottle a comet's 10,000-mile vapor trail, the amount of vapor actually present in the bottle would take up less than one cubic inch of space.
    • Vapor (Pharm) A medicinal agent designed for administration in the form of inhaled vapor.
    • Vapor An old name for hypochondria, or melancholy; the blues. "A fit of vapors ."
    • Vapor (Physics) Any substance in the gaseous, or aëriform, state, the condition of which is ordinarily that of a liquid or solid. "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 ."
    • Vapor 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].""Fire and hail; snow and vapors ; stormy wind fulfilling his word."
    • Vapor 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."
    • Vapor To emit vapor or fumes. "Running waters vapor not so much as standing waters."
    • Vapor To pass off in fumes, or as a moist, floating substance, whether visible or invisible, to steam; to be exhaled; to evaporate.
    • v. t Vapor To send off in vapor, or as if in vapor; as, to vapor away a heated fluid. "He'd laugh to see one throw his heart away,
      Another, sighing, vapor forth his soul."
    • Vapor To talk idly; to boast or vaunt; to brag. "Poets used to vapor much after this manner.""We vapor and say, By this time Matthews has beaten them."
    • Vapor Wind; flatulence.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: The condensed water vapor in the sky left behind by jets is called a contrail.
    • n vapor An exhalation of moisture; any visible diffused substance, as fog, mist, steam, or smoke, floating in the atmosphere and impairing its transparency.
    • n vapor In physics, the gaseous form which a solid or liquid substance assumes when sufficiently heated. Vapor is essentially gas, and, since all known gases have now been proved to be liquefiable, no physical difference can be said really to exist between an ordinary gas, such as oxygen, and a vapor, such as steam. In common language, however, a difference is usually recognized: a gas is a substance which at ordinary temperatures and pressures exists in the gaseous state, while a vapor is the gaseous form of a substance which normally exists in a solid or liquid form. An important distinction exists between a saturated vapor (one which is on the point of condensation) and a non-saturated vapor (one which can be compressed or cooled to a certain extent without condensation). The latter obeys Boyle's and Gay-Lussac's laws of gases; in the former, however, increased compression produces condensation, but does not change the pressure of the vapor, which is a function of the temperature alone. Superheated steam is a non-saturated vapor. Aqueous vapor is always present as a minor constituent of the atmosphere, and its amount, which is very variable both at different places on the earth's surface and in the same locality at different times, forms an important element of climate. By a reduction of temperature the aqueous vapor in the air is brought to the socalled state of saturation, and then condensed into cloud, mist, and rain. See rain.
    • n vapor Effluence; influence.
    • n vapor Wind; flatulence.
    • n vapor In medicine, a class of remedies, officinal in the British pharmacopœia, which are to be applied by inhalation: such as vapor creasoti, a mixture of 12 minims of creosote in 8 fluidounces of boiling water, the vapor of which is to be inhaled.
    • n vapor Something unsubstantial, fleeting, or transitory; vain imagination; fantastic notion.
    • n vapor plural A hectoring or bullying style of language or conduct, adopted by ranters and swaggerers with the purpose of bringing about a real or mock quarrel.
    • n vapor plural A disease of nervous debility in which strange images seem to float hazily before the eyes, or appear as if real; hence, hypochondriacal affections; depression of spirit; dejection; spleen; “the blues”: a term much affected in the eighteenth century, but now rarely used.
    • vapor To pass off in the form of vapor; dissolve, as into vapor or thin air; be exhaled; evaporate.
    • vapor To give out vapor, steam, or gas; emit vapors or exhalations; exhale; steam.
    • vapor To boast or vaunt; bully; hector; brag; swagger; bounce.
    • vapor To cause to pass into the state of vapor; cause to dissolve or disappear in or as in vapor, gas, thin air, or other unsubstantial thing.
    • vapor To afflict or infect with vapors; dispirit; depress.
    • vapor To bully; hector.
    • ***
Chambers's Twentieth Century Dictionary
    • n Vapor the gas into which most liquids and solids are convertible by heat: the condition of a body when it becomes gas by heat: water in the atmosphere: anything vain or transitory:
    • n Vapor (pl.) a disease of nervous weakness in which a variety of strange images float before the mind, temporary depression of spirits, dejection
    • ***


  • Horace Greeley
    Horace Greeley
    “Fame is a vapor, popularity an accident, and riches take wings. Only one thing endures and that is character.”
  • Lord Byron
    “O Gold! I still prefer thee unto paper, which makes bank credit like a bark of vapor.”
  • William Shakespeare
    “I had rather be a toad, and live upon the vapor of a dungeon than keep a corner in the thing I love for others uses.”
  • Bible
    “For what is your life? It is even a vapor, that appeareth for a little time, and then vanisheth away. [James 4:14]”


Webster's Revised Unabridged Dictionary
OE. vapour, OF. vapour, vapor, vapeur, F. vapeur, L. vapor,; probably for cvapor, and akin to Gr. smoke, to breathe forth, Lith. kvepti, to breathe, smell, Russ. kopote, fine soot. Cf. Vapid
Chambers's Twentieth Century Dictionary
Fr.,—L. vapor.


In literature:

Then came a day when great mists and vapors rose from the swamp, and the air grew heavy.
"The Eyes of the Woods" by Joseph A. Altsheler
The men play streams of water over them and the building is filled with vapor.
"Diggers in the Earth" by Eva March Tappan
Sometimes on a cool morning you can see the mist or vapor too heavy to rise out of sight and too light to fall as rain.
"Journeys Through Bookland, Vol. 10" by Charles Herbert Sylvester
He went a little further, and by the way in which the red vapor now spouted forth he judged that the creatures had got upon their feet.
"Famous Tales of Fact and Fancy" by Various
Moreover, toward the horizon, the vapor of the atmosphere veils the little stars of sixth magnitude.
"Astronomy for Amateurs" by Camille Flammarion
I be free of it in a ship but the land reeks with foul vapors.
"Blackbeard: Buccaneer" by Ralph D. Paine
Foot by foot he struggled up the slope, hoping each moment to break through this blanket of vapor into the clear air.
"Cavanaugh: Forest Ranger" by Hamlin Garland
The scene was changed; all was over; smoke and vapor and showers had ceased, and Vesuvius had returned to its normal slumber.
"Complete Story of the San Francisco Horror" by Richard Linthicum
Above him, gray sky and thin writhing filaments of vapor.
"The Trail of the Hawk" by Sinclair Lewis
A little vapor and ammonia accompany this gas.
"Alcohol: A Dangerous and Unnecessary Medicine, How and Why" by Martha M. Allen

In poetry:

At his command the vapors rise,
The lightnings flash, the thunders roar;
He pours the rain, he brings the wind
And tempest from his airy store.
"Psalm 135 part 2" by Isaac Watts
'Twas bright, but as frail as a shadow;
It passed like a vapor away—
As the mist which hangs over the meadow
Dissolves in the sun's burning ray.
"Retrospection" by David John Scott
Then athwart the vapors dun
The Easter sun
Streamed with one broad track of splendor!
In their real forms appeared
The warlocks weird,
Awful as the Witch of Endor.
"Tales Of A Wayside Inn : Part 1. The Musician's Tale; The Saga of King Olaf V. -- The Skerry Of Shri" by Henry Wadsworth Longfellow
There comes a perfume from the sunset land,
And from the sunset vapor comes a voice;
Some one in evening's gateway seems to stand,
And o'er a flood of glory shout, "Rejoice!"
"Twilight" by Maurice Thompson
Dreams? O, I know their faces — goodly seeming,
Vaporous, whirled on many-coloured wings;
I have had dreams before, this is no dreaming,
But daylight gladness that the daylight brings.
"In the Night" by Amy Levy
Child, lover, sire,--yea, all things loved below,--
Fair pictures damasked on a vapor's fold,--
Fade like the roseate flush, the golden glow,
When the bright curtain of the day is rolled.
"Homesick In Heaven" by Oliver Wendell Holmes

In news:

You'll want to rest, drink plenty of liquids and maybe even plug in a cold-mist vaporizer for relief.
"Money doesn't vaporize," he says.
Students are seen in this image running down the hall as it filled with pepper spray vapor.
On 1996 and newer vehicles, the OBD II system performs an EVAP emissions test to check for vapor leaks.
A less-expensive option is to gently inhale the vapors of freshly grated horseradish.
Tucson News Plays Santa's Little Helper Earlier This Year with Ladybug 2150 Steam Cleaner Sale.
New Age vaporizing with the Magic-Flight Launch Box.
Take a Magic Flight with this sweet San Diego vaporizer design.
George Hall captured a flash, likely an asteroid vaporizing in Jupiter 's atmosphere, on September 10th, 2012.
Karl Andrzejewski holds a plastic bag filled with marijuana vapor at his home in Kalamazoo, Mich.
They found an emission- control device too small to handle vapors, records show.
Gas-Vapor Monitor for Biofuel Research.
Aside from its whitewater, the Pigeon River is also known for the controversy that rises from it like vapor on a hot summer morning.
Water vapor (invisible water in the air) always exists in our air.
Big chamber to advance physical vapor deposition applications.

In science:

Liquid-vapor phase transition for systems with finite-range interactions system. J.
One-dimensional random field Kac's model: localization of the phases
When data for all four IRAC bands are available, we should be able to verify definitively the presence of water vapor in the atmosphere of an extrasolar giant planet, though by the absolute level at 8.0 µm of the TrES-1 flux in Fig. 2 the presence of water already seems likely.
Theoretical Interpretation of the Measurements of the Secondary Eclipses of TrES-1 and HD209458b
For the difference ∆ between the liquid and vapor peak positions, finite size scaling predicts ∆ ∝ L−β/ν .
Critical behavior of colloid-polymer mixtures in random porous media
Similarly, for the width χ of the vapor or liquid peak χ ∝ L(γ /ν−d)/2 .
Critical behavior of colloid-polymer mixtures in random porous media
Liquid-vapor phase transition for systems with finiterange interactions system. J.
One-dimensional random field Kac's model: weak large deviations principle