eruption Hear it!

eruption definition

erup·tion (ē rup′s̸hən, i-)

noun

  1. a bursting forth or out, as of lava from a volcano
  2. a throwing forth of lava, water, steam, etc.
  3. a sudden outburst, as of emotion or social discontent
  4. Med.
    1. a breaking out in a rash
    2. a rash

Etymology: ME erupcioun < L eruptio: see erupt

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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