from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Barely visible or cloudy diffused matter, such as mist, fumes, or smoke, suspended in the air.
- n. The state of a substance that exists below its critical temperature and that may be liquefied by application of sufficient pressure.
- n. The gaseous state of a substance that is liquid or solid under ordinary conditions.
- n. The vaporized form of a substance for use in industrial, military, or medical processes.
- n. A mixture of a vapor and air, as the explosive gasoline-air mixture burned in an internal-combustion engine.
- n. Archaic Something insubstantial, worthless, or fleeting.
- n. Archaic A fantastic or foolish idea.
- n. Archaic Exhalations within a bodily organ, especially the stomach, supposed to affect the mental or physical condition. Used with the.
- n. Archaic A nervous disorder such as depression or hysteria. Used with the.
- transitive v. To vaporize.
- intransitive v. To give off vapor.
- intransitive v. To evaporate.
- intransitive v. To engage in idle, boastful talk.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Cloudy diffused matter such as mist, steam or fumes suspended in the air.
- n. The gaseous state of a substance that is normally a solid or liquid.
- v. To become vapor; to be emitted or circulated as vapor.
- v. To turn into vapor.
- v. To use insubstantial language; to boast or bluster.
from the GNU version of the Collaborative International Dictionary of English
- n. Any substance in the gaseous, or aëriform, state, the condition of which is ordinarily that of a liquid or solid.
- n. In a loose and popular sense, any visible diffused substance floating in the atmosphere and impairing its transparency, as smoke, fog, etc.
- n. Wind; flatulence.
- n. Something unsubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting.
- n. An old name for hypochondria, or melancholy; the blues.
- n. A medicinal agent designed for administration in the form of inhaled vapor.
- intransitive v. To pass off in fumes, or as a moist, floating substance, whether visible or invisible, to steam; to be exhaled; to evaporate.
- intransitive v. To emit vapor or fumes.
- intransitive v. To talk idly; to boast or vaunt; to brag.
- transitive v. To send off in vapor, or as if in vapor.
from The Century Dictionary and Cyclopedia
- To pass off in the form of vapor; dissolve, as into vapor or thin air; be exhaled; evaporate.
- To give out vapor, steam, or gas; emit vapors or exhalations; exhale; steam.
- To boast or vaunt; bully; hector; brag; swagger; bounce.
- 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.
- To afflict or infect with vapors; dispirit; depress.
- To bully; hector.
- n. An exhalation of moisture; any visible diffused substance, as fog, mist, steam, or smoke, floating in the atmosphere and impairing its transparency.
- n. In physics, the gaseous form which a solid or liquid substance assumes when sufficiently heated.
- n. Effluence; influence.
- n. Wind; flatulence.
- n. 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. Something unsubstantial, fleeting, or transitory; vain imagination; fantastic notion.
- n. 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. 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.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the process of becoming a vapor
- n. a visible suspension in the air of particles of some substance
In visible light water vapor is not a problem; as long as clouds don't form, it's transparent.
Dryer B: A hot vapor is injected onto clothes inside the dryer drum.
Water vapor is the most powerful/ubiquitous greenhouse gas
* As more water vapor is added to the atmosphere, generally scientists believe that it will increase cloud cover
Alex J says: the Colonel (ret): Water vapor is vastly greater in actual effect than CO2, you going to ban that too?
Water vapor is vastly greater in actual effect than CO2, you going to ban that too?
RealClimate noted this fact several years ago, claiming that water vapor is a feedback, not a forcing.
Water vapor: Water vapor is the most abundant greenhouse gas, and skeptics have tried to use this fact to dismiss claims about atmospheric CO2 levels.
However, water vapor is consistently the most common volcanic gas, normally comprising more than 60% of total emissions.
The main facts portrayed in this chart are that water vapor is the controlling greenhouse gas, and human produced carbon dioxide is a very small fraction of total carbon dioxide.