Definition of Vapor

N M
steam| exhalation| vapor| heat

nidor

(v. t.)
To send off in vapor, or as if in vapor; as, to vapor away a heated fluid.
  

(n.)
Wind; flatulence.
  

(n.)
To talk idly; to boast or vaunt; to brag.
  

(n.)
To pass off in fumes, or as a moist, floating substance, whether visible or invisible, to steam; to be exhaled; to evaporate.
  

(n.)
To emit vapor or fumes.
  

(n.)
Something unsubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting.
  

(n.)
In a loose and popular sense, any visible diffused substance floating in the atmosphere and impairing its transparency, as smoke, fog, etc.
  

(n.)
Any substance in the gaseous, or aeriform, state, the condition of which is ordinarily that of a liquid or solid.
  

(n.)
An old name for hypochondria, or melancholy; the blues.
  

(n.)
A medicinal agent designed for administration in the form of inhaled vapor.
  

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vapor
\va"por\ (?), n. [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.] [written also vapour.]
1. (physics) any substance in the gaseous, or aëriform, 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.
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]. fire and hail; snow and vapors; stormy wind fulfilling his word. 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. pharm.
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.
vapor
\va"por\, v. t. to send off in vapor, or as if in vapor; as, to vapor away a heated fluid. [written also vapour.] he'd laugh to see one throw his heart away, another, sighing, vapor forth his soul. jonson.
vapor
\va"por\, v. i. [imp. & p. p. vapored (?); p. pr. & vb. n. vaporing.] [from vapor, n.: cf. l. vaporare.] [written also vapour.] 1. to pass off in fumes, or as a moist, floating substance, whether visible or invisible, to steam; to be exhaled; to evaporate.
2. to emit vapor or fumes. [r.] running waters vapor not so much as standing waters.
3. 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
n
1. a visible suspension in the air of particles of some substance [syn: vapour]


2. the process of becoming a vapor [syn: vaporization, vaporisation, vapour, evaporation]

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Noun
1. a visible suspension in the air of particles of some substance
(synonym) vapour
(hypernym) suspension
(hyponym) steam
(derivation) evaporate, vaporise
2. the process of becoming a vapor
(synonym) vaporization, vaporisation, vapour, evaporation
(hypernym) phase change, phase transition, state change, physical change
(hyponym) boiling
(derivation) evaporate, vaporise

a substance in the gaseous state that is capable of being liquefied by compression or cooling.

The gaseous form of substances that are normally in liquid or solid form.

When a liquid changes to a gaseous form. The ability of the gas to hold moisture will reduce as temperatures reduce; more moisture can be contained in the gas as the temperatures increase.

A gas, particularly one near to equilibrium with the liquid phase of the substance and which does not follow the gas laws. Usually used instead of gas for a refrigerant, and, in general, for any gas below the critical temperature.

The gaseous state of a fluid that normally exists as a liquid under atmospheric conditions, i.e. a gas whose temperature is below its critical temperature.

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The gaseous state of a substance which under ordinary conditions exists as a liquid or solid.

muhs

a vapor; a cloud of God
  

vanity; breath; vapor
  

vapor, or cloud of God