- Physics. a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid.
- any such fluid or mixture of fluids.
- any such fluid used as an anesthetic, as nitrous oxide: Did the dentist give you gas for your extraction?
- any such combustible fluid used as fuel: Light the gas in the oven.
- Also called gas pedal.the foot-operated accelerator of an automotive vehicle: Take your foot off the gas.
- Coal Mining. an explosive mixture of firedamp with air.
- an aeriform fluid or a mistlike assemblage of fine particles suspended in air, used in warfare to asphyxiate, poison, or stupefy an enemy.
- empty talk.
- a person or thing that is very entertaining, pleasing, or successful: The party was an absolute gas, and we loved it.
- a person or thing that affects one strongly.
- to supply with gas.
- to overcome, poison, or asphyxiate with gas or fumes.
- to singe (yarns or fabrics) with a gas flame to remove superfluous fibers.
- to treat or impregnate with gas.
- to talk nonsense or falsehood to.
- to amuse or affect strongly: Her weird clothes really gas me.
- to give off gas, as a storage battery being charged.
- to indulge in idle, empty talk.
- to become drunk (often followed by up).
- gas up, to fill the gasoline tank of an automobile, truck, or other vehicle.
- step on the gas, Informal. to increase the speed of one's movement or activity; hurry: We'd better step on the gas or we'll be late for the concert.
Origin of gas
- a Kwa language of Ghana, spoken in Accra and vicinity.
Examples from the Web for gas
Security officials told Agence France-Presse that the gas station manager said he had recognized the two men.
Unconfirmed reports in the French media claimed that the brothers were spotted at a gas station in northern France on Thursday.
Her slight miscalculation of how to fix the situation leads to her driving around the gas pump.Slow Motion Tiger Jump, a Tornado at the Rose Bowl and More Viral Videos
The Daily Beast Video
January 4, 2015
We have no heating; there is no gas and it is very cold inside the prison.An American Marine in Iran’s Prisons Goes on Hunger Strike
December 18, 2014
It was from a former Railroad Commission employee who had gone to work for an oil and gas developer.Two Texas Regulators Tried to Enforce the Rules. They Were Fired.
David Hasemyer, InsideClimate News
December 9, 2014
Under the gas chandelier, he straightened and threw out his arms.
The thought of the gas office and its deadly round sickened him.
Sidney had lighted the gas and was throwing on her dressing-gown.
Gas is indispensable in the operation of dirigible balloons, and gas is expensive.
Of acid it would take 60 times the weight of the gas, or nearly 76 tons.
- a substance in a physical state in which it does not resist change of shape and will expand indefinitely to fill any container. If very high pressure is applied a gas may become liquid or solid, otherwise its density tends towards that of the condensed phaseCompare liquid (def. 1), solid (def. 1)
- any substance that is gaseous at room temperature and atmospheric pressure
- any gaseous substance that is above its critical temperature and therefore not liquefiable by pressure aloneCompare vapour (def. 2)
- a gaseous anaesthetic, such as nitrous oxide
- mining firedamp or the explosive mixture of firedamp and air
- the usual US, Canadian, and New Zealand word for petrol See also gasoline
- step on the gas informal
- to increase the speed of a motor vehicle; accelerate
- to hurry
- a toxic or suffocating substance in suspension in air used against an enemy
- informal idle talk or boasting
- slang a delightful or successful person or thinghis latest record is a gas
- US an informal name for flatus
- (tr) to provide or fill with gas
- (tr) to subject to gas fumes, esp so as to asphyxiate or render unconscious
- (intr) to give off gas, as in the charging of a battery
- (tr) (in textiles) to singe (fabric) with a flame from a gas burner to remove unwanted fibres
- (intr foll by to) informal to talk in an idle or boastful way (to a person)
- (tr) slang, mainly US and Canadian to thrill or delight
- plural Ga, Gas, Gã or Gãs a member of a Negroid people of W Africa living chiefly in S Ghana
- the language of this people, belonging to the Kwa branch of the Niger-Congo family
- General Assembly (of the United Nations)
- general average
Word Origin and History for gas
1650s, from Dutch gas, probably from Greek khaos "empty space" (see chaos). The sound of Dutch "g" is roughly equivalent to that of Greek "kh." First used by Flemish chemist J.B. van Helmont (1577-1644), probably influenced by Paracelsus, who used khaos in an occult sense of "proper elements of spirits" or "ultra-rarified water," which was van Helmont's definition of gas.
Modern scientific sense began 1779, with later specialization to "combustible mix of vapors" (1794, originally coal gas); "anesthetic" (1894, originally nitrous oxide); and "poison gas" (1900). Meaning "intestinal vapors" is from 1882. "The success of this artificial word is unique" [Weekley]. Slang sense of "empty talk" is from 1847; slang meaning "something exciting or excellent" first attested 1953, from earlier hepster slang gasser in the same sense (1944). Gas also meant "fun, a joke" in Anglo-Irish and was used so by Joyce (1914). As short for gasoline, it is American English, first recorded 1905.
1886, "to supply with gas," from gas (n.). Sense of "poison with gas" is from 1889 as an accidental thing, from 1915 as a military attack. Related: Gassed; gassing.
- The state of matter distinguished from the solid and liquid states by relatively low density and viscosity, relatively great expansion and contraction with changes in pressure and temperature, the ability to diffuse readily, and the spontaneous tendency to become distributed uniformly throughout any container.
- A substance in the gaseous state.
- A gaseous fuel, such as natural gas.
- A gaseous asphyxiant, an irritant, or a poison.
- A gaseous anesthetic, such as nitrous oxide.
- To treat chemically with gas.
- To overcome, disable, or kill with poisonous fumes.
- To give off gas.
- The symbol for the elementgallium
- One of four main states of matter, composed of molecules in constant random motion. Unlike a solid, a gas has no fixed shape and will take on the shape of the space available. Unlike a liquid, the intermolecular forces are very small; it has no fixed volume and will expand to fill the space available.
- The symbol for gallium.