gas - definition in the American English Dictionary - Cambridge Dictionaries Online

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gas

noun  us   /ɡæs/

gas noun (MATTER)

science [C/U] a form of matter that is neither solid nor liquid and can increase in size to fill any container science [C/U] Gas is also the usual word used to talk about natural gas . [C/U] Gas is also the feeling that you sometimes get after eating a lot and the air such eating produces in your stomach.

gas noun (LIQUID FUEL)

[U] (also gasoline,  /ˈɡæs·əˌlin, ˌ==ˈ=/ ) a liquid obtained from petroleum (= dark, thick oil), used esp. as a fuel for cars and other vehicles: We’re running low on gas.

gas

verb [T]  us   /ɡæs/ (-ss-)

gas verb [T] (BREATHE MATTER)

to kill or injure people or animals by making them breathe poisonous gas: Hundreds of thousands of soldiers were gassed in World War I.
Phrasal verbs
(Definition of gas from the Cambridge Academic Content Dictionary © Cambridge University Press)
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