gas 1 S1 W2 / ɡæs / 名词 ( 复数形式 gases or gasses )

1 [可数和不可数名词] a substance such as air, which is not solid or liquid, and usually cannot be seen :

hydrogen gas

toxic/poisonous/noxious gases

a cloud of toxic gas

a gas cylinder/bottle (= for storing gas ) → greenhouse gas

2 [不可数名词] a clear substance like air that is burned for heating or cooking

gas cooker/stove/oven

Can you light the gas for me?

The explosion was caused by a gas leak from the water heater.

3 gas mark 4/5/6 etc British English a measurement of the temperature of a gas oven

4 [不可数名词] American English ( also gasoline ) a liquid made from petroleum , used mainly for producing power in the engines of cars, trucks etc 同义词 petrol British English :

I probably spend over $200 a month on gas.

The mechanic found a hole in the gas tank .

5 the gas American English the gas pedal of a car 同义词 accelerator :

We stepped on the gas (= pushed down the gas pedal and made the car go faster ) and sped away.

6 [不可数名词] a clear substance like air that is used for medical reasons, for example to make people feel less pain or make them sleep during an operation :

an anaesthetic gas → laughing gas

7 [不可数名词] a type of gas used as a weapon, because it harms or kills people when they breathe it in :

mustard gas → nerve gas , poison gas , tear gas

8 [不可数名词] American English informal the condition of having a lot of air in your stomach 同义词 wind British English

9 a gas American English old-fashioned spoken something that is fun and makes you laugh a lot

COLLOCATIONS

ADJECTIVES/NOUN + gas

natural gas (= gas used for cooking and heating, taken from under the earth or from under the sea ) The main part of natural gas is methane.

a poisonous/toxic gas Carbon monoxide is the main poisonous gas in car exhaust.

a noxious gas (= a harmful or poisonous gas ) A noxious gas was discovered to be leaking from the pipe.

a greenhouse gas (= a gas, especially carbon monoxide or methane, that is thought to trap heat above the earth and cause the Earth’s surface to become warmer ) We need to reduce greenhouse gas emissions.

nerve gas (= a poisonous gas used in war to kill or paralyse people ) Troops were exposed to low levels of nerve gas during the conflict.

tear gas (= a gas that stings your eyes, used by the police to control crowds ) Police using tear gas had clashed with protestors.

gas + NOUN

a gas cooker/oven/stove Gas cookers are more efficient than electric ones.

a gas fire (= an object that burns gas to heat a room ) She turned on the gas fire.

a gas cylinder (= a large container for gas ) One of the gas cylinders exploded.

a gas bottle (= a small container for gas ) The gas bottles need to be stored in a safe place.

a gas leak (= an escape of gas through a hole in something ) If you suspect a gas leak, do not strike a match or even turn on an electric light.

a gas supply (= a system for supplying gas to someone’s house ) The engineers had quite a challenge to install the new gas supply.

gas reserves (= a supply of gas kept to be used when it is needed ) Norway has far greater gas reserves than the UK.

a gas pipeline The Chinese and Russian governments are cooperating in gas pipeline projects.

a gas bill (= a bill you have to pay for gas you have used ) Household gas bills have increased dramatically.

gas production The company expanded its gas production facilities.

the gas industry There are plans to nationalize the country’s gas industry.