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
Kevin Pina’s rocket set off an eruption of joy, only for Cape Verde to trail at half-time mostly because of Maximiliano Araujo, the only Uruguay attacker showing any semblance of form.
—
Anantaajith Raghuraman,
New York Times,
4 July 2026
The area remains geologically active, so the landscape is ever-changing and tectonic forces are expected to produce future eruptions.
—
Josh Laskin,
Travel + Leisure,
3 July 2026
Several of these eruptions were accompanied by coronal mass ejections (CMEs) that appear to be at least partially Earth-directed.
—
Daisy Dobrijevic,
Space.com,
2 July 2026
The most powerful solar flares are X-class solar flares, and forecasters at NOAA observed one of these eruptions on Tuesday.
—
Zachary Folk,
Forbes.com,
2 July 2026
See All Example Sentences for eruption
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Anantaajith Raghuraman,
New York Times,
4 July 2026
The area remains geologically active, so the landscape is ever-changing and tectonic forces are expected to produce future eruptions.
—
Josh Laskin,
Travel + Leisure,
3 July 2026
Several of these eruptions were accompanied by coronal mass ejections (CMEs) that appear to be at least partially Earth-directed.
—
Daisy Dobrijevic,
Space.com,
2 July 2026
The most powerful solar flares are X-class solar flares, and forecasters at NOAA observed one of these eruptions on Tuesday.
—
Zachary Folk,
Forbes.com,
2 July 2026
See All Example Sentences for eruption
Cite this Entry
“Eruption.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eruption. Accessed 5 Jul. 2026.
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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