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
Similar tectonic settings along the Aleutian and Kamchatka subduction zones have produced both major earthquakes and volcanic eruptions in recent months.
—
Hollie Silverman, MSNBC Newsweek, 20 Sep. 2025
Random eruptions of cheers, when goals went in, and jeers, when the opponent did something to ridicule, blended.
—Daniel Sperry, Kansas City Star, 20 Sep. 2025
Tsunamis are a series of giant waves caused by undersea earthquakes at tectonic plate boundaries, or volcanic eruptions.
—George Petras, USA Today, 18 Sep. 2025
The massive 1980 eruption blasted a column of ash and gas more than 15 miles into the atmosphere and triggered a devastating landslide, killing 57 people in what was the most destructive eruption in modern US history.
—Briana Waxman, CNN Money, 17 Sep. 2025
See All Example Sentences for eruption
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Hollie Silverman, MSNBC Newsweek, 20 Sep. 2025
Random eruptions of cheers, when goals went in, and jeers, when the opponent did something to ridicule, blended.
—Daniel Sperry, Kansas City Star, 20 Sep. 2025
Tsunamis are a series of giant waves caused by undersea earthquakes at tectonic plate boundaries, or volcanic eruptions.
—George Petras, USA Today, 18 Sep. 2025
The massive 1980 eruption blasted a column of ash and gas more than 15 miles into the atmosphere and triggered a devastating landslide, killing 57 people in what was the most destructive eruption in modern US history.
—Briana Waxman, CNN Money, 17 Sep. 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 23 Sep. 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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