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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The team notes that the gases are chemically indistinguishable from gases present in volcanic rocks from Hawaiʻi, where volcanism is fueled by a mantle plume. David Bressan, Forbes.com, 27 May 2025 Topology, volcanism, surface ages, rock types and the aforementioned thorium difference are just some of the differences that any hypothesis attempting to model the formation and subsequent evolution of the moon have to explain. Keith Cooper, Space.com, 9 Apr. 2025 Melting the lunar surface through extensive volcanism is one way to reset the zircons. Nola Taylor Tillman, Space.com, 8 May 2025 About 80 percent of Earth’s volcanism happens on the seafloor, with the vast majority occurring along the mid-ocean ridge. Maya Wei-Haas, New York Times, 2 May 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 5 Jun. 2025.

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