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)

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Most associate Vesuvius with the 79 CE eruption that encased Pompeii in ash, preserving it for eternity. Francesca Aton, ARTnews.com, 28 Jan. 2025 In the days following the eruption of the Los Angeles fires, children called and texted their instructors at Jigsaw to make sure their favorite horses were doing okay. Charisma Madarang, Rolling Stone, 27 Jan. 2025 Rubin sheds light on dark energy Type Ia supernovas have been intrinsic to the concept of dark energy since 1998 when two separate teams of researchers used these white dwarf eruptions to determine that the universe was expanding at an accelerating rate. Robert Lea, Space.com, 27 Jan. 2025 This way, something like climate change was also simulated along other extreme events like volcanic eruptions or drought. Laura Baisas, Popular Science, 22 Jan. 2025 See all Example Sentences for eruption 

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 Feb. 2025.

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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