gas (gases plural) (gasses 3rd person present) (gassing present participle) (gassed past tense & past participle )
The form gases is the plural of the noun. The form gasses is the third person singular of the verb.
1 n-uncount 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.
2 n-var 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.
3 n-mass Gas is a poisonous gas that can be used as a weapon.
...mustard gas..., The problem was that the exhaust gases contain many toxins.
4 n-mass 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.
5 n-uncount Gas is the fuel which is used to drive motor vehicles.
(AM)
(=gasoline)
...a tank of gas., ...gas stations.
in BRIT, use petrol
6 verb 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. V n
7
→
gas chamber
→
gas mask
→
greenhouse gas
→
laughing gas
→
natural gas
→
tear gas
8 If you step on the gas when you are driving a vehicle, you go faster. (mainly AM) INFORMAL
step on the gas phrase V inflects in BRIT, use step on it
Calor Gas
Calor gas is gas in liquid form which is sold in special containers so that people can use it in places which are not connected to the gas supply, such as tents or caravans.
®
n-uncount
CS gas
CS gas is a gas which causes you to cry and makes breathing painful. It is sometimes used by the police to control a crowd which is rioting.
(BRIT) n-uncount
(=tear gas)
gas chamber (gas chambers plural )A gas chamber is a room that has been specially built so that it can be filled with poisonous gas in order to kill people or animals. n-count
gas fire (gas fires plural )A gas fire is a fire that produces heat by burning gas. n-count
gas guzzler (gas guzzlers plural ), gas-guzzler If you say that a car is a gas guzzler you mean that it uses a lot of fuel and is not cheap to run.
(AM)
INFORMAL n-count
gas mask (gas masks plural )A gas mask is a device that you wear over your face in order to protect yourself from poisonous gases. n-count
gas pedal (gas pedals plural )Thegas pedal is another name for the accelerator.
(mainly AM) n-count usu the N
gas ring (gas rings plural )A gas ring is a metal device on top of a cooker or stove, where you can burn gas in order to cook food on it.
(BRIT) n-count
in AM, use burner
gas station (gas stations plural )A gas station is a place where you can buy fuel for your car.
(AM) n-count
in BRIT, use petrol station
greenhouse gas (greenhouse gases plural )Greenhouse gases are the gases which are responsible for causing the greenhouse effect. The main greenhouse gas is carbon dioxide. n-var
laughing gas
Laughing gas is a type of anaesthetic gas which sometimes has the effect of making people laugh uncontrollably. n-uncount
(=nitrous oxide)
mustard gas
Mustard gas is a gas which burns the skin and was used in war as a weapon. n-uncount
natural gas
Natural gas is gas which is found underground or under the sea. It is collected and stored, and piped into people's homes to be used for cooking and heating. n-uncount
nerve gas (nerve gases plural )Nerve gas is a poisonous gas used in war as a weapon. n-mass
poison gas
Poison gas is a gas that is poisonous and is usually used to kill people in war or to execute criminals. n-uncount
tear gas
Tear gas is a gas that causes your eyes to sting and fill with tears so that you cannot see. It is sometimes used by the police or army to control crowds. n-uncount
Police used tear gas to disperse the demonstrators.
