noun, plural gases or gasses.
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.
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.
verb (used with object), gassed, gassing.
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.
verb (used without object), gassed, gassing.
to give off gas, as a storage battery being charged.
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.
noun (pl) gases, gasses
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 phase Compare liquid (sense 1), solid (sense 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 alone Compare vapour (sense 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
(informal) step on the gas
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 thing: his latest record is a gas
(US) an informal name for flatus
verb gases, gasses, gassing, gassed
(transitive) to provide or fill with gas
(transitive) to subject to gas fumes, esp so as to asphyxiate or render unconscious
(intransitive) to give off gas, as in the charging of a battery
(transitive) (in textiles) to singe (fabric) with a flame from a gas burner to remove unwanted fibres
(informal) (intransitive) foll by to. to talk in an idle or boastful way (to a person)
(transitive) (slang, mainly US & Canadian) to thrill or delight
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.
n. pl. gas·es or gas·ses
v. gassed, gas·sing, gas·es or gas·ses
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.
gaseous adjective (gās’ē-əs, gāsh’əs)
In physics, one of the phases of matter. The atoms or molecules in gases are more widely spaced than in solids or liquids and suffer only occasional collisions with one another.
A strong type of marijuana obtained from a cultivated strain of Indian hemp: He remembers an uncle getting so mean on ganja, he kills his girlfriend
[1800+ Narcotics; fr Hindi; adopted from West Indian use]
group A streptococci
In addition to the idiom beginning with
[ga-sahn-dee] /ga sɑ̃ˈdi/ noun 1. Pierre [pyer] /pyɛr/ (Show IPA), 1592–1655, French philosopher and scientist. /French ɡasɛndɪ/ noun 1. Pierre. 1592–1655, French physicist and philosopher, who promoted an atomic theory of matter
[gas-er] /ˈgæs ər/ noun 1. Slang. something that is extraordinarily pleasing or successful, especially a very funny joke. 2. a person or thing that . [gas-er] /ˈgæs ər/ noun 1. Herbert Spencer, 1888–1963, U.S. physiologist: Nobel Prize in Medicine 1944. /ˈɡæsə/ noun 1. a drilling or well that yields natural gas /ˈɡæsə/ noun 1. Herbert […]
gasserian gas·ser·i·an (gā-sēr’ē-ən) adj. Of, relating to, or described by Austrian anatomist Johann Ludwig Gasser (1723-1765).
- Gasserian ganglion
gasserian ganglion n. See trigeminal ganglion.