What (who) is gas - definition
WIKIMEDIA DISAMBIGUATION PAGE
GAS; Gassed; Gas (film); Gas (fuel); Gas (album)
gas
![Isothermal curves depicting the non-ideality of a ''real gas.'' The changes in volume (depicted by Z, [[compressibility factor]]) which occur as the pressure is varied.
The compressibility factor Z, is equal to the ratio Z = PV/nRT.
An ideal gas, with compressibility factor Z = 1, is described by the horizontal line where the y-axis is equal to 1. Non-ideality can be described as the deviation of a gas above or below Z = 1.](https://commons.wikimedia.org/wiki/Special:FilePath/Compressibility Factor of Air 75-200 K.png?width=200 "Isothermal curves depicting the non-ideality of a ''real gas.'' The changes in volume (depicted by Z, [[compressibility factor]]) which occur as the pressure is varied.
The compressibility factor Z, is equal to the ratio Z = PV/nRT.
An ideal gas, with compressibility factor Z = 1, is described by the horizontal line where the y-axis is equal to 1. Non-ideality can be described as the deviation of a gas above or below Z = 1.")
![Dalton]]'s notation.](https://commons.wikimedia.org/wiki/Special:FilePath/Daltons symbols.gif?width=200 "Dalton]]'s notation.")
![Random motion of gas particles results in [[diffusion]].](https://commons.wikimedia.org/wiki/Special:FilePath/Diffusion animation.gif?width=200 "Random motion of gas particles results in [[diffusion]].")
![21 April 1990 eruption of [[Mount Redoubt]], Alaska, illustrating real gases not in thermodynamic equilibrium.](https://commons.wikimedia.org/wiki/Special:FilePath/MountRedoubtEruption.jpg?width=200 "21 April 1990 eruption of [[Mount Redoubt]], Alaska, illustrating real gases not in thermodynamic equilibrium.")
![[[Delta wing]] in wind tunnel. The shadows form as the indices of refraction change within the gas as it compresses on the leading edge of this wing.](https://commons.wikimedia.org/wiki/Special:FilePath/Schlierenfoto Mach 17 Delta - NASA.jpg?width=200 "[[Delta wing]] in wind tunnel. The shadows form as the indices of refraction change within the gas as it compresses on the leading edge of this wing.")
![Robinson Crusoe Islands]] on 15 September 1999, shows a turbulent cloud pattern called a [[Kármán vortex street]]](https://commons.wikimedia.org/wiki/Special:FilePath/Vortex-street-1.jpg?width=200 "Robinson Crusoe Islands]] on 15 September 1999, shows a turbulent cloud pattern called a [[Kármán vortex street]]")
ONE OF THE FOUR FUNDAMENTAL STATES OF MATTER
Gaseous state; Gaseous phase; Gaseous; Atomic Gas; Atomic gases; Atomic gas; Gases; Gas State; Gas state; Gaseous State; Organic gas; Gas-phase; Gasses; Permanent gas
(gases, gasses, gassing, gassed)
Frequency: The word is one of the 1500 most common words in English.
Note: The form 'gases' is the plural of the noun. The form 'gasses' is the third person singular of the verb.
1.
Gas is a substance like air that is neither liquid nor solid and burns easily. It is used as a fuel for cooking and heating.
Coal is actually cheaper than gas...
Shell signed a contract to develop oil and gas reserves near Archangel.
N-UNCOUNT
2.
A gas is any substance that is neither liquid nor solid, for example oxygen or hydrogen.
Helium is a very light gas.
...a huge cloud of gas and dust from the volcanic eruption.
N-VAR
3.
Gas is a poisonous gas that can be used as a weapon.
...mustard gas...
The problem was that the exhaust gases contain many toxins.
N-MASS
4.
Gas is a gas used for medical purposes, for example to make patients feel less pain or go to sleep during an operation. (INFORMAL)
...an anaesthetic gas used by many dentists.
N-MASS
5.
...a tank of gas.
...gas stations.
= gasoline
N-UNCOUNT
6.
To gas a person or animal means to kill them by making them breathe poisonous gas.
Her husband ran a pipe from her car exhaust to the bedroom in an attempt to gas her.
VERB: V n
7.
8.
If you step on the gas when you are driving a vehicle, you go faster. (mainly AM INFORMAL; in BRIT, use step on it
)
)
PHRASE: V inflects
gas
ONE OF THE FOUR FUNDAMENTAL STATES OF MATTER
Gaseous state; Gaseous phase; Gaseous; Atomic Gas; Atomic gases; Atomic gas; Gases; Gas State; Gas state; Gaseous State; Organic gas; Gas-phase; Gasses; Permanent gas
¦ noun (plural gases or chiefly US gasses)
1. an air-like fluid substance which expands freely to fill any space available, irrespective of its quantity.
Physics a substance of this type that cannot be liquefied by pressure alone. Compare with vapour.
a flammable gas used as a fuel.
Mining an explosive mixture of firedamp (methane) with air.
2. a gaseous anaesthetic such as nitrous oxide, used in dentistry.
3. N. Amer. flatulence.
4. N. Amer. informal gasoline; petrol.
5. (a gas) informal an entertaining or amusing person or thing.
¦ verb (gases, gassing, gassed)
1. kill or harm by exposure to gas.
(of a storage battery or dry cell) give off gas.
2. informal talk idly; chatter.
3. N. Amer. informal fill the tank of (a motor vehicle) with petrol.
Derivatives
gasification noun
gasify verb (gasifies, gasifying, gasified).
gasser noun
Origin
C17: invented by the Belgian chemist J. B. van Helmont to denote an occult principle which he believed to exist in all matter; suggested by Gk khaos 'chaos'.
gas
ONE OF THE FOUR FUNDAMENTAL STATES OF MATTER
Gaseous state; Gaseous phase; Gaseous; Atomic Gas; Atomic gases; Atomic gas; Gases; Gas State; Gas state; Gaseous State; Organic gas; Gas-phase; Gasses; Permanent gas
Wikipedia
Gas (disambiguation)
Gas is one of the four main physical states of matter (plural "gases" or "gasses").
Gas or GAS may also refer to:
Pronunciation examples for gas
1. Gas, gas, gas!
Avatar
2. Gas! Gas!
Red (2010)
3. Gas! Gas!
Red (2010)
4. Gas! I smell gas!
Red (2010)
5. Gas! I smell gas!
Red (2010)
Examples of use of gas
1. Atlantic Electric & Gas remains the cheapest licensed gas supplier and British Gas, despite a lower than average gas price increase, remains the most expensive of the major suppliers.
2. Gas Trader Ends Supply to Poland Reuters WARSAW –– Gas trader RosUkrEnergo has halted supplies of Central Asian gas to Poland, Polish gas monopoly PGNiG said Monday.
3. Gas stations were reported to be running out of gas.
4. The gas companies divided up the gas market among themselves.
5. Gas stations were running low on gas by midafternoon Saturday.