eruption

noun

erup·​tion i-ˈrəp-shən How to pronounce eruption (audio)
1
a
: 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)

Example Sentences

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 Just 11 hours after the eruption began, a new island had appeared, and NASA confirmed its formation with satellite images. Jordan Mendoza, USA TODAY, 28 Sep. 2022 Kilauea is well-known for a 2018 eruption that destroyed 700 homes and sent rivers of lava spreading across farms and into the ocean. From Usa Today Network And Wire Reports, USA TODAY, 5 Nov. 2022 But his devotion to the cause predates the eruption of America’s latest education culture wars. Peter Jamison, Washington Post, 3 Nov. 2022 Researchers used images captured by satellites passing over the eruption site to confirm the plume’s height. Ashley Strickland, CNN, 3 Nov. 2022 Although that exodus was less frantic since a few weeks of earthquakes likely preceded the eruption, giving the Sinagua people time to realize that the neighborhood was about to undergo some drastic changes. Roger Naylor, The Arizona Republic, 3 Nov. 2022 As noted above, the last eruption of this dormant volcano appears to have happened around 800 to 900 years ago, based on history based down by Alaska natives. Joshua Hawkins, BGR, 30 Oct. 2022 During the 1950 Mauna Loa eruption, lava flows reached the ocean in less than a day. Bynadine El-bawab, ABC News, 28 Oct. 2022 During a 1950 eruption, lava traveled 15 miles down the steep mountain to the ocean in less than three hours, according to the AP. Anna Lazarus Caplan, Peoplemag, 28 Oct. 2022 See More

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.

Word History

First Known Use

1555, in the meaning defined at sense 1a

Time Traveler
The first known use of eruption was in 1555

Dictionary Entries Near eruption

Cite this Entry

“Eruption.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eruption. Accessed 2 Dec. 2022.

Kids Definition

eruption

noun

erup·​tion i-ˈrəp-shən How to pronounce eruption (audio)
1
: an act, process, or instance of erupting
2
: a product (as a skin rash) of erupting

Medical Definition

eruption

noun

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

More from Merriam-Webster on eruption

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