In medicine, a vaporizer is a machine that distributes medication in the form of a gas that a patient inhales. It's also another name for a humidifier, a device that increases moisture in the air.

A vapor is a gas, and the job of a vaporizer is to create vapor. A child who's badly congested might need to breathe the warm steam of a home vaporizer to ease a cough. And a patient preparing for surgery often inhales their anesthesia through a mask with the aid of a vaporizer. The word comes from the Latin root vaporem, "a warm exhalation" or "steam."

Definitions of vaporizer
  1. noun
    a device that puts out a substance in the form of a vapor (especially for medicinal inhalation)
    synonyms: vaporiser
    see moresee less
    type of:
    an instrumentality invented for a particular purpose
Word Family

Test prep from the experts

Boost your test score with programs developed by’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.


  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week


  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week


  • Number of words: 700+
  • Duration: 10 weeks
  • Time: 1 hour / week