Meaning & Definition of word "Vapor"

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    Vapor

    /ˈveɪpər/

    noun:

    • 1. An often transient state or condition that is imperceptible or insubstantial.
      • Example: His promises turned to vapor as time passed.
    • 2. A substance diffused or suspended in the air, especially in the form of tiny particles of liquid or solid.
      • Example: The vapor from the boiling water rose into the air.
    • 3. The gaseous state of a substance that is normally liquid or solid at room temperature.
      • Example: When heated, the ice transformed into water vapor.

    verb:

    • 1. To convert (a substance) into vapor or steam.
      • Example: The scientist vaporized the liquid using a special apparatus.
    • 2. To become or cause to become vapor.
      • Example: The sunlight caused the dew on the grass to vapor away.

    Etymology

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

    Common Phrases and Expressions

    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.

    Related Words

    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.

    Slang Meanings of vapor

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

    Example Sentence: He decided to vapor after dinner instead of smoking cigarettes.

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

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