Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “gas”

gas

noun uk   /ɡæs/ us  

gas noun (AIR SUBSTANCE)

B2 [C or U] a substance in a form like air that is neither solid nor liquid: Oxygen, hydrogen and nitrogen are all gases. poisonous/inflammable/toxic gasThe state of matter A2 [C or U] a substance in a form like air that is used as a fuel for heating and cooking: Do you prefer cooking with electricity or gas?UK A leak in the gas mains (= pipes) caused a major explosion. a gas-fired power stationFuelsPetroleum products especially when used as fuel [U] informal a substance in a form like air used for medical purposes to prevent people feeling pain or being conscious during an operation: I had/was given gas when I got my wisdom teeth out.SurgeryMedicine in different forms [U] mainly US for wind noun: Beer gives me gas.Digestive disorders

gas noun (LIQUID FUEL)

A2 [U] US for petrol: I'll stop and get some gas - we're running low. a gas tank/pumpPetroleum products especially when used as fuelFuels the gas [S] US the part of a car that you push with your foot to make it go faster: Step on the gas (= drive faster)!The interior of vehicles

gas noun (ENJOYABLE SITUATION)

[S] mainly US informal a funny or enjoyable situation: Some kids put on a show for the moms and dads, - it was a gas.General words for fun

gas

verb uk   /ɡæs/ (-ss-) us  

gas verb (POISON)

[T] to kill or injure a person by making them breathe poisonous gas: Hundreds of thousands of soldiers were gassed in the First World War.Murder and attempted murderKilling

gas verb (TALK)

[I] old-fashioned informal to talk for a long time about things that are not important: Susan came round and we sat gassing for hours.Informal talking and conversation
Phrasal verbs
(Definition of gas from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of gas?
Browse related topics

You are looking at an entry to do with Filling and completing, but you might be interested in these topics from the Full and empty topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “gas” in other dictionaries

Word of the Day

scrumpy

an alcoholic drink made from apples

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More