A substance in the gas phase at a temperature lower than its critical temperature, which means that the vapor can be condensed to a liquid by increasing the pressure without reducing the temperature. noun
The morning air was filled with the vapor rising from the lake.
Water vapor is an important part of the Earth's atmosphere.
A visible exhalation, such as fog, mist, steam, or smoke, suspended in the air. noun
The cold weather caused the vapor from her breath to be visible.
The vapor from the boiling pot filled the kitchen.
To convert or be converted into vapor. verb
The liquid began to vapor as the temperature increased.
The sun vaporized the morning dew on the grass.