vol·​ca·​nism | \ ˈväl-kə-ˌni-zəm How to pronounce volcanism (audio) , ˈvȯl-\

Definition of volcanism

: volcanic action or activity

Examples of volcanism in a Sentence

Recent Examples on the Web

This process is accompanied by surface manifestations along the rift valley in the form of volcanism and seismic activity. Lucia Perez Diaz, CNN, "Big crack evidence East Africa could be splitting in two," 5 Apr. 2018 People affected by volcanism around the world often find ways to see beyond its initial destruction to the rejuvenation that follows. Eva Botkin-kowacki, The Christian Science Monitor, "Life on a volcano: Hawaiians face Kilauea eruption with reverence," 15 May 2018 Researchers have long cited intense volcanism in modern-day Siberia as the main culprit behind the cataclysm, also known as the Permian-Triassic mass extinction, 252 million years ago. Lucas Joel, Scientific American, "Oxygen Depletion Smothered Marine Life in Earth's Largest Mass Extinction," 15 May 2018 The bright spots are thought to be pyroclastic ash linked to ancient explosive volcanism that lasted billions of years, Charles Q. Choi wrote for Space.com in 2014. Julissa Treviño, Smithsonian, "Sci-Fi and Snakes Rule in New Official Names for Features on Pluto’s Largest Moon and Mercury," 17 Apr. 2018 The islands of the Philippines are situated along the Ring of Fire, a curving chain of volcanism that hugs the boundary of the Pacific Ocean and contains three-fourths of all the world’s volcanoes. Maya Wei-haas, Smithsonian, "Geology Makes the Mayon Volcano Visually Spectacular—And Dangerously Explosive," 19 Jan. 2018 But the good news is that Mars is nowhere near as geologically active as Earth, with its plate tectonics and volcanism and many earthquakes. Matt Simon, WIRED, "Inside the Cleanroom Where NASA’s New Mars Lander Waits to Launch," 9 Apr. 2018 Spread across the planet, the faculae have been linked to billions of years of explosive volcanism in Mercury’s past. Nola Taylor Redd, Science | AAAS, "Mercury’s ‘snakes’ get formal names," 9 Apr. 2018 The rupture process is often accompanied by seismic activity and volcanism. Laura Geggel, Washington Post, "A huge crack provides evidence that Africa is slowly splitting into two," 7 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'volcanism.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of volcanism

1830, in the meaning defined above

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Time Traveler for volcanism

The first known use of volcanism was in 1830

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More from Merriam-Webster on volcanism

Rhyming Dictionary: Words that rhyme with volcanism

Britannica English: Translation of volcanism for Arabic Speakers

Britannica.com: Encyclopedia article about volcanism

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an act or instance of returning to life

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