gases
nounUK /ˈɡæsɪz/
US /ˈɡæsɪz/
Gases are air-like things that have no fixed shape and fill up whatever space they are in.
The balloon filled with gas and floated up into the sky.
OTHER MEANINGS
2. The plural of gas, meaning substances like oxygen or helium that are not solid or liquid.
Scientists studied several gases in the lab.
3. Fuel used for cooking or heating, such as natural gas.
We use gas to cook our food at home.
4. Informal word for gasoline, the fuel that powers cars.
He stopped at the station to buy gas for his car.