eruption

noun

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

Synonyms of eruption

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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
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For example, users could use the feature to visualize the city of Pompeii before the eruption of Vesuvius, or turn famous landmarks into illustrated infographics populated with data pulled directly from Gemini’s multimodal output. — Paul Monckton, Forbes.com, 1 Aug. 2026 All told, that makes the eruption a remarkable scientific opportunity for those focused on submarine volcanism. — Meghan Bartels, Scientific American, 31 July 2026 It was established in 1918 to protect the area changed by the Novarupta eruption and the Valley of Ten Thousand Smokes. — Abby Price, Travel + Leisure, 30 July 2026 While fine ash was detected within public areas of Hawaii Volcanoes National Park, no solid rocks or magma fragments that were ejected during the eruption were reported in any other populated areas. — Julia Jacobo, ABC News, 29 July 2026 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

Phrases Containing eruption

Rhymes for eruption

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Browse Nearby Words

erupt in laughter
eruption
eruptive
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Cite this Entry

“Eruption.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eruption. Accessed 5 Aug. 2026.

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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

Nglish: Translation of eruption for Spanish Speakers

Britannica.com: Encyclopedia article about eruption

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