volcanism

noun

vol·​ca·​nism ˈväl-kə-ˌni-zəm How to pronounce volcanism (audio)
ˈvȯl-
: volcanic action or activity

Examples of volcanism in a Sentence

Recent Examples on the Web
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As heat accumulates in the interior, the Earth in Kane’s simulations would experience an uptick in volcanism lasting for about 15 million years. Quanta Magazine, 15 Sep. 2025 Cloud microphysics, past volcanism, and sparse in-situ data keep the debate alive. Kaif Shaikh, Interesting Engineering, 11 Sep. 2025 Likely the trace elements were removed from Earth’s mantle by volcanism, trapping them in the first rocks of today’s continents. David Bressan, Forbes.com, 31 Aug. 2025 The meteorite is more evidence that volcanism continued throughout this period on the moon; Chang'e 5 has found such evidence in its samples from the moon's farside of volcanism in the past 123 million years. Keith Cooper, Space.com, 17 July 2025 See All Example Sentences for volcanism

Word History

First Known Use

1830, in the meaning defined above

Time Traveler
The first known use of volcanism was in 1830

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Cite this Entry

“Volcanism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/volcanism. Accessed 21 Sep. 2025.

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