Definition of Vapour. Meaning of Vapour. Synonyms of Vapour

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Definition of Vapour

vapour
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 a["e]riform, 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.] --Bacon. 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.' --Pope. 6. (Pharm.) A medicinal agent designed for administration in the form of inhaled vapor. --Brit. 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.
vapour
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. --Bacon. 3. To talk idly; to boast or vaunt; to brag. Poets used to vapor much after this manner. --Milton. We vapor and say, By this time Matthews has beaten them. --Walpole.

Meaning of Vapour from wikipedia

- In physics, a vapor (American English) or vapour (British English) is a substance in the gas phase at a temperature lower than its critical temperature...
- Vapour density is the density of a vapour in relation to that of hydrogen. It may be defined as m**** of a certain volume of a substance divided by m****...
- The vapour pressure of water is the pressure at which water vapour is in thermodynamic equilibrium with its condensed state. At higher pressures water...
- Play media Vapor pressure (or vapour pressure in British spelling) or equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic...
- Water vapor, water vapour or aqueous vapor is the gaseous phase of water. It is one state of water within the hydrosphere. Water vapor can be produced...
- A vapour pressure thermometer is a thermometer that uses a pressure gauge to measure the vapour pressure of a liquid. "Vapour pressure thermometry" (PDF)...
- Carbonyl metallurgy Electrostatic spray ****isted vapour deposition Element Six Ion plating Metalorganic vapour phase epitaxy Virtual metrology "Low Pressure...
- Metalorganic vapour-phase epitaxy (MOVPE), also known as organometallic vapour-phase epitaxy (OMVPE) or metalorganic chemical vapour deposition (MOCVD)...
-  S. Keating of England patented a mercury vapour lamp, considered by some to be the first true mercury vapour lamp. The first mercury vapor lamp to achieve...
- In thermodynamics, vapour quality is the m**** fraction in a saturated mixture that is vapour; in other words, saturated vapour has a "quality" of 100%...
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