erup·​tion | \ i-ˈrəp-shən How to pronounce eruption (audio) \

Definition of eruption

1a : an act, process, or instance of erupting
b : the breaking out of a rash on the skin or mucous membrane
2 : a product of erupting (such as a skin rash)

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Examples of eruption in a Sentence

a great eruption of glee as it suddenly dawned on her that she had won the eruption of the volcano Krakatoa was one of the most violent in global history

Recent Examples on the Web

That end-twist came after a scarier, more insular entry for the franchise (notably directed by The Orphanage filmmaker J.A. Bayona as opposed to Trevorrow) that had already seen Isla Nublar melt down during a volcanic eruption. Isaac Feldberg, Fortune, "How the ‘Battle at Big Rock’ Short Film Sets Up a Smarter, Scarier ‘Jurassic World 3’," 16 Sep. 2019 Now, weather balloons probing the stratosphere have traced the mysterious purple light to a volcanic eruption in Russia. Alex Fox, Science | AAAS, "This sulfur-spewing Russian volcano is turning sunsets purple," 13 Sep. 2019 The crew brought a sample back to Earth, and researchers discovered that the soil was formed when molten droplets sprayed out of a volcanic eruption 3.64 billion years ago. Jason Daley, Smithsonian, "China Claims Lunar Rover Found a Gel-Like Substance on the Moon," 3 Sep. 2019 Rather, it was formed nearly 8,000 years ago when 12,000-foot Mt. Mazama collapsed after a huge volcanic eruption that scientists say was many times more powerful than the one that blew the top of Mt. St. Helens. Brian E. Clark, Los Angeles Times, "A little e-bike cheating makes Oregon Cascades bike tour a gem of a cycling trip," 24 Aug. 2019 Over the next few months, the park took severe damage from dozens of earthquakes and eruptions. Avery Thompson, Popular Mechanics, "Hawaii's Volcano National Park, Closed by Kilauea, Is Finally Reopening," 21 Sep. 2018 Future earthquakes and volcanic eruptions, though not imminent, are to be expected, due to Indonesia's position in the Pacific Ocean’s Ring of Fire, an arc of ocean trenches and volcanoes that is prone to tectonic shifts. Meredith Carey, Condé Nast Traveler, "Lombok Earthquake Kills 100, Strands Tourists on Indonesian Islands," 6 Aug. 2018 But there’s more to plate tectonics than earthquakes and eruptions. Quanta Magazine, "Why Earth’s Cracked Crust May Be Essential for Life," 7 June 2018 More earthquakes and eruptions could cover the area with plumes of ash. Trevor Hughes, USA TODAY, "Lava from Kilauea volcano destroys more homes on the Big Island," 7 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'eruption.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of eruption

1555, in the meaning defined at sense 1a

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Statistics for eruption

Last Updated

7 Oct 2019

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Time Traveler for eruption

The first known use of eruption was in 1555

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More Definitions for eruption


erup·​tion | \ i-ˈrəp-shən How to pronounce eruption (audio) \

Kids Definition of eruption

1 : an instance of a volcano exploding
2 : the bursting out of material from a volcano
3 : the sudden occurrence or appearance of something


erup·​tion | \ i-ˈrəp-shən How to pronounce eruption (audio) \

Medical Definition of eruption

1 : an act, process, or instance of erupting the eruption of the tooth from the gum specifically : the breaking out of an exanthem or enanthem on the skin or mucous membrane (as in measles)
2 : something produced by an act or process of erupting: as
a : the condition of the skin or mucous membrane caused by erupting
b : one of the lesions (as a pustule) constituting this condition

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Comments on eruption

What made you want to look up eruption? Please tell us where you read or heard it (including the quote, if possible).


to fake an opponent out of position

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