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
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.
The planetary science community quickly coalesced around the idea that tidal heating within Io is responsible for the never-ending volcanism on the surface. Robin Andrews, Wired News, 15 June 2025 However, scientists are uncertain whether the volcanism and rifting is due to shallow processes or whether it is driven by up-welling hot material from Earth’s mantle. David Bressan, Forbes.com, 27 May 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 Given the level of volcanism on Io, this may be more widespread than the Loki Patera. John Timmer, Ars Technica, 19 Apr. 2024 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 Aug. 2025.

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