vapor

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Related to vapour: vapour pressure

vapor

 [va´por] (pl. vapo´res, vapors) (L.)
1. steam, gas, or exhalation.
2. an atmospheric dispersion of a substance that in its normal state is liquid or solid.

va·por

(vā'pŏr),
1. Molecules in the gaseous phase of a solid or liquid substance exposed to a gas.
2. A visible emanation of fine particles of a liquid.
3. A medicinal preparation to be administered by inhalation.
[L. steam]

vapor

(vā′pər)
n.
1. The gaseous state of a substance that is liquid or solid at room temperature.
2. A faintly visible suspension of fine particles of matter in the air, as mist, fumes, or smoke.
3. vapors Archaic
a. Exhalations within a bodily organ, especially the stomach, supposed to affect the mental or physical condition. Used with the.
b. A nervous disorder such as depression or hysteria. Used with the.

va′por·er n.

va·por

(vā'pŏr)
1. The gaseous phase of a substance that can be compressed into a liquid or a solid at the temperature of the vapor.
2. The gaseous phase of a solid or liquid at any temperature below its boiling point.
3. A common but incorrect term for a liquid aerosol (a visible suspension of fine liquid droplets in the atmosphere).
Synonym(s): vapour.
[L. steam]

va·por

(vā'pŏr)
1. Molecules in gaseous phase of a solid or liquid substance exposed to a gas.
2. Visible emanation of fine particles of a liquid.
3. Medicinal preparation to be administered by inhalation.
Synonym(s): vapour.
[L. steam]
References in periodicals archive ?
Many new manufacturers of vapour and steam turbines are expected to enter the global market, making it more competitive in the coming years.
The fully flooded finned tube for pure steam condensation at atmospheric pressure and vapour velocity of 7.5 m/s (Fig.
Heat transfer results: Condensation of steam-ethanol mixtures on finned tube with heat flux plotted against vapour-to-surface temperature difference for different vapour velocities and three pressures was calculated (Fig-8).
The effect of vapour shear on retention angle had been reported by Namasivayam and Briggs (2005 2006) and Fitzgerald (2012).
Assuming equilibrium conditions this would result in about 10% ethanol in the vapour but again assuming equilibrium this would again be 1% in the condensate which would have a negligible effect on the surface tension.
(1) at the same vapour-to-surface temperature difference and vapour velocity.
This was independent of vapour-side temperature difference but a fairly strong function of vapour velocity.
It was interesting to note that assuming equilibrium conditions in the test section the ethanol concentration in the vapour was at least more than 10 times than in the liquid (Table 1).
Conclusion: Experimental data of heat transfer and condensate retention have been obtained for condensation of steam-ethanol mixtures over a range of vapour velocities on a finned tube.
Dubai Three Emarat petrol stations in Dubai are currently being used to test two methods to recover toxic and invisible benzene vapours that escape from vehicles every time they top up a tank.
Exposure to smelly hydrocarbon vapours at petrol stations while refuelling your car can have a negative impact on health u from a heady "high" to nausea or even cancer.
Benzene in petrol is carcinogenic and can possibly cause cancer to people exposed to excessive petrol vapours. Another component in petrol, methyl tertiary butyl ether has a distinctive disagreeable smell which often generates complaints from residents living close to petrol stations.