eruption
noun
erup·tion
i-ˈrəp-shən 
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)
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
During Mount Etna’s recent eruption, however, the flow was contained within the region’s Lion Valley, per the AP.
—
Margherita Bassi, Smithsonian Magazine, 4 June 2025
More recently, Mount Etna has been active in the past few months, with this eruption being the 14th episode since March 2025 after a 19-day lull.
—Kenna Hughes-Castleberry, Space.com, 4 June 2025
Experts warned, however, Monday’s eruption could lead to volcanic activity continuing for several weeks.
—Washington Examiner Staff, The Washington Examiner, 3 June 2025
Italy's Mount Etna, Europe's highest active volcano, produced a spectacularly explosive eruption yesterday, sending reddish clouds rippling from its summit.
—Brittney Melton, NPR, 3 June 2025
See All Example Sentences for eruption
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Margherita Bassi, Smithsonian Magazine, 4 June 2025
More recently, Mount Etna has been active in the past few months, with this eruption being the 14th episode since March 2025 after a 19-day lull.
—Kenna Hughes-Castleberry, Space.com, 4 June 2025
Experts warned, however, Monday’s eruption could lead to volcanic activity continuing for several weeks.
—Washington Examiner Staff, The Washington Examiner, 3 June 2025
Italy's Mount Etna, Europe's highest active volcano, produced a spectacularly explosive eruption yesterday, sending reddish clouds rippling from its summit.
—Brittney Melton, NPR, 3 June 2025
See All Example Sentences for eruption
Cite this Entry
“Eruption.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eruption. Accessed 13 Jun. 2025.
Copy CitationKids Definition
eruption
noun
erup·tion
i-ˈrəp-shən
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
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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