
Vapour
Change of State
The term 'vapour' is used when a substance changes from solid or liquid to gas.

The boiling kettle released a stream of vapour.
Visible Gas
'Vapour' often refers to gas that you can see, like steam or fog.

The cold air turned his breath into a vapour.
Not Always Water
While it's often water, 'vapour' can be any liquid or solid turned gas.

Gasoline vapour can be highly flammable.
Compare with
FogFumeGasHazeMistSmogSmokeSteam
WordUp Chrome Extension
As you browse the web instantly look up words you don’t know.
Get Chrome Extension