Vapor

/ˈveɪpər/

Meaning & Definition

noun

An often transient state or condition that is imperceptible or insubstantial.

His promises turned to vapor as time passed.

A substance diffused or suspended in the air, especially in the form of tiny particles of liquid or solid.

The vapor from the boiling water rose into the air.

The gaseous state of a substance that is normally liquid or solid at room temperature.

When heated, the ice transformed into water vapor.

verb

To convert (a substance) into vapor or steam.

The scientist vaporized the liquid using a special apparatus.

To become or cause to become vapor.

The sunlight caused the dew on the grass to vapor away.

Middle English, from Latin vapor, meaning 'mist, steam, or air'.

vapor trail

The visible path left by an aircraft in the sky, caused by water vapor.

vapor lock

A condition in which vaporized fuel prevents a liquid fuel system from operating correctly.

condensation

The process of a gas turning into a liquid.

evaporation

The process of a liquid changing into a vapor.

humidity

The amount of water vapor present in the air.

To vaporize or smoke a substance, often referring to marijuana.

He decided to vapor after dinner instead of smoking cigarettes.

To brag or boast, often about one's abilities or possessions.

She was just vapor about her new job and how much money she was making.