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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Griggs and his fellow expeditioners were walking through the aftermath of the 20th century’s most prolific act of volcanism — a 60-hour frenzy that smothered much of the Pacific Northwest in onyx snow. Quanta Magazine, 27 Mar. 2026 The reduction in volatiles would limit volcanism by suppressing the formation of magma, providing a strong explanation for why the lunar far side contains so few maria. Keith Cooper, Space.com, 23 Jan. 2026 Although volcanism on Earth is traditionally associated with scorching lava and fiery eruptions, cryovolcanism essentially operates similarly, but with the opposite materials. Andrew Paul, Popular Science, 3 Dec. 2025 Atalay Ayele, a geologist at Addis Ababa University, said such eruptions occur because Ethiopia is situated along an active rift system where volcanism and earthquakes are frequent. Brittany Williams, Arkansas Online, 26 Nov. 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 3 Apr. 2026.

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