Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “gas”

See all translations

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 gasA2 [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 station [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. [U] mainly US ( UK wind) air in the bowels or in a baby's stomach, especially that which makes you feel uncomfortable or makes noises: Beer gives me gas.
More examples

gas noun (LIQUID FUEL)

A2 [U] US ( also formal gasoline, UK petrol) a liquid obtained from petroleum , used especially as a fuel for cars, aircraft, and other vehicles: I'll stop and get some gas - we're running low. a gas tank/pumpthe gas [S] mainly US the part of a car that you push with your foot to make it go faster: Step on the gas (= drive faster)!
More examples

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.

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.

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.
Phrasal verbs
(Definition of gas from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of gas?
Add Cambridge dictionaries to your browser to your website

Definitions of “gas” in other dictionaries

Word of the Day

be as cold as ice

to be extremely cold

Word of the Day

Cleavage proves divisive in Cambridge’s words of 2014

by Alastair Horne,
December 19, 2014
​​​​ Other dictionaries may choose faddish novelties as their words of the year, but here at Cambridge, we like to do something different. We look for the words that have seen sudden surges in searches over the course of the year – words that have been baffling users of English and driven them

Read More 

cinderella surgery noun

December 15, 2014
cosmetic surgery to the feet We have all heard of people having nose jobs, boob jobs and liposuction – but now a new trend growing in popularity in America: Cinderella surgery.

Read More