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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This region likely saw quite a bit of volcanism in the past, with lava and ash deposits building up over time and being buried by other material through the years. Kenna Hughes-Castleberry, Space.com, 5 Dec. 2025 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 On Earth, these shifting plates drive volcanism and rock weathering, which are key to carbon cycling. Morgan Underwood, The Conversation, 19 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 13 Dec. 2025.

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