the process of becoming a vapor
"The heat caused the water to undergo vapor, rising as steam from the kettle."
Cloudy diffused matter such as mist, steam or fumes suspended in the air.
"The morning sun illuminated a thick vapor of frost rising from the frozen lake."
In plain English: Vapor is an invisible gas that forms when something hot turns into steam and mixes with cool air.
"The hot water from the shower turned into vapor and filled the bathroom with steam."
Usage: Use this word specifically for visible clouds of gas like steam or fog rather than invisible gases. As a verb, it describes substances turning into these airborne states without implying combustion.
To become vapor; to be emitted or circulated as vapor.
"The dry ice quickly vaporized into a thick, foggy cloud that filled the room."
In plain English: To vapor something means to turn it into gas so that it disappears as smoke or steam.
"The hot soup began to vapor quickly when I opened the lid."
The word vapor comes from the Latin term vapor, which originally meant steam or heat. It entered English through Middle English and Anglo-Norman as a direct borrowing from Old French.