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Gas   /gæs/   Listen
noun
Gas  n.  (pl. gases)  
1.
An aeriform fluid; a term used at first by chemists as synonymous with air, but since restricted to fluids supposed to be permanently elastic, as oxygen, hydrogen, etc., in distinction from vapors, as steam, which become liquid on a reduction of temperature. In present usage, since all of the supposed permanent gases have been liquified by cold and pressure, the term has resumed nearly its original signification, and is applied to any substance in the elastic or aeriform state.
2.
(Popular Usage)
(a)
A complex mixture of gases, of which the most important constituents are marsh gas, olefiant gas, and hydrogen, artificially produced by the destructive distillation of gas coal, or sometimes of peat, wood, oil, resin, etc. It gives a brilliant light when burned, and is the common gas used for illuminating purposes.
(b)
Laughing gas.
(c)
Any irrespirable aeriform fluid.
3.
Same as gasoline; a shortened form. Also, the accelerator pedal of a motor vehicle; used in the term " step on the gas".
4.
The accelerator pedal of a motor vehicle; used in the term " step on the gas".
5.
Same as natural gas.
6.
An exceptionally enjoyable event; a good time; as, The concert was a gas. (slang) Note: Gas is often used adjectively or in combination; as, gas fitter or gasfitter; gas meter or gas-meter, etc.
Air gas (Chem.), a kind of gas made by forcing air through some volatile hydrocarbon, as the lighter petroleums. The air is so saturated with combustible vapor as to be a convenient illuminating and heating agent.
Gas battery (Elec.), a form of voltaic battery, in which gases, especially hydrogen and oxygen, are the active agents.
Gas carbon, Gas coke, etc. See under Carbon, Coke, etc.
Gas coal, a bituminous or hydrogenous coal yielding a high percentage of volatile matters, and therefore available for the manufacture of illuminating gas.
Gas engine, an engine in which the motion of the piston is produced by the combustion or sudden production or expansion of gas; especially, an engine in which an explosive mixture of gas and air is forced into the working cylinder and ignited there by a gas flame or an electric spark.
Gas fitter, one who lays pipes and puts up fixtures for gas.
Gas fitting.
(a)
The occupation of a gas fitter.
(b)
pl. The appliances needed for the introduction of gas into a building, as meters, pipes, burners, etc.
Gas fixture, a device for conveying illuminating or combustible gas from the pipe to the gas-burner, consisting of an appendage of cast, wrought, or drawn metal, with tubes upon which the burners, keys, etc., are adjusted.
Gas generator, an apparatus in which gas is evolved; as:
(a)
a retort in which volatile hydrocarbons are evolved by heat;
(b)
a machine in which air is saturated with the vapor of liquid hydrocarbon; a carburetor;
(c)
a machine for the production of carbonic acid gas, for aerating water, bread, etc.
Gas jet, a flame of illuminating gas.
Gas machine, an apparatus for carbureting air for use as illuminating gas.
Gas meter, an instrument for recording the quantity of gas consumed in a given time, at a particular place.
Gas retort, a retort which contains the coal and other materials, and in which the gas is generated, in the manufacture of gas.
Gas stove, a stove for cooking or other purposes, heated by gas.
Gas tar, coal tar.
Gas trap, a drain trap; a sewer trap. See 4th Trap, 5.
Gas washer (Gas Works), an apparatus within which gas from the condenser is brought in contact with a falling stream of water, to precipitate the tar remaining in it.
Gas water, water through which gas has been passed for purification; called also gas liquor and ammoniacal water, and used for the manufacture of sal ammoniac, carbonate of ammonia, and Prussian blue.
Gas well, a deep boring, from which natural gas is discharged.
Gas works, a manufactory of gas, with all the machinery and appurtenances; a place where gas is generated for lighting cities.
Laughing gas. See under Laughing.
Marsh gas (Chem.), a light, combustible, gaseous hydrocarbon, CH4, produced artificially by the dry distillation of many organic substances, and occurring as a natural product of decomposition in stagnant pools, whence its name. It is an abundant ingredient of ordinary illuminating gas, and is the first member of the paraffin series. Called also methane, and in coal mines, fire damp.
Natural gas, gas obtained from wells, etc., in Pennsylvania, Ohio, and elsewhere, and largely used for fuel and illuminating purposes. It is chiefly derived from the Coal Measures.
Olefiant gas (Chem.). See Ethylene.
Water gas (Chem.), a kind of gas made by forcing steam over glowing coals, whereby there results a mixture of hydrogen and carbon monoxide. This gives a gas of intense heating power, but destitute of light-giving properties, and which is charged by passing through some volatile hydrocarbon, as gasoline.



verb
Gas  v. t.  (past & past part. gassed; pres. part. gassing)  
1.
(Textiles) To singe, as in a gas flame, so as to remove loose fibers; as, to gas thread.
2.
To impregnate with gas; as, to gas lime with chlorine in the manufacture of bleaching powder.
3.
To expose to a poisonous or noxious gas "The protest threatened to become violent, and the police gassed the demonstrators to force them to disperse."






Collaborative International Dictionary of English 0.48








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"Gas" Quotes from Famous Books



... Chigi palace the commotion assumed the aspect of a riot. The carriage had to stop. Elena leaned forward to look out, and her face emerging from the shadows and lighted up by the glare of the gas and the reflection of the sunset seemed of a ghastly whiteness, an almost icy pallor, reminding Andrea of some head he had seen before, he could not say where or when—in some ...
— The Child of Pleasure • Gabriele D'Annunzio

... man may be dressed in cloth, numerous operations are first necessary. Before the intervention of any human labor, the real primary materials of this article are air, water, heat, gas, light, and the various salts which enter into its composition. These are indeed untouched by human labor, for they have no value, and I have never dreamed of their needing protection. But a first labor converts these substances ...
— Sophisms of the Protectionists • Frederic Bastiat

... November, when mankind has a tendency to become chronically cross out of doors, and nature, generally, looks lugubrious; for, just in proportion as the exterior world grows miserably chill, the world "at home," with its blazing gas, its drawn curtains, its crackling fires, and its beaming smiles, becomes ...
— Fighting the Flames • R.M. Ballantyne

... by night, and from the windows of the flying train, as it whirls past the streets at full speed, you see Paris enveloped in red steam, pierced by starry lines of gas-lamps crisscrossing in every direction, the sight is weird, and almost beautiful. You might fancy it the closing scene of some gigantic gala, where strings upon strings of colored lanterns brighten the night above a moving throng, passing, repassing, ...
— The Ink-Stain, Complete • Rene Bazin

... this manner for more than an hour. Neither of the sisters-in-law realized how rapidly the time was flying until dusk fell so heavily that it became necessary to light the gas in order to see each ...
— Campfire Girls in the Allegheny Mountains - or, A Christmas Success against Odds • Stella M. Francis


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