vapour

Definition

Vapour is a substance that has turned from a liquid into a gas. It is like a cloud of tiny particles of the liquid that are floating in the air.

Vapour can be seen when water boils. The water turns into a gas and rises up into the air.

Vapour can also be seen when we take a hot shower. The water on our skin turns into a gas and makes the air feel humid.

How can the word be used?

The steam rose from the boiling water.

Different forms of the word

Noun:

a substance in the gaseous state at a temperature below its boiling point.
a visible mist or cloud of such a substance.

Verb:

to change from a liquid or solid to a gaseous state.
to give off vapour.

Etymology

The word "vapour" comes from the Old French word "vapor", which also means "a substance in the gaseous state at a temperature below its boiling point".

The first recorded use of the word "vapour" in English was in the 14th century.

Question

Where might you find vapour?