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 And the volcanism might have had toxic local effects. Scott K. Johnson, Ars Technica, "Did huge eruptions actually help during the end-Cretaceous extinction?," 1 July 2020 Born of volcanism that began shaping the area millions of years ago, this mountainous parcel in northern Arizona is no stranger to fire. Mare Czinar, The Arizona Republic, "Easy Flagstaff hike shows the forest 10 years after Schultz Fire. Here's what to look for," 6 July 2020 The scientists were then able to map where these conditions would still exist after either an asteroid strike or a period of massive volcanism. Katie Hunt, CNN, "Yes, an asteroid really did wipe out the dinosaurs, study finds," 29 June 2020 Quick, who specializes in volcanism and ocean worlds, and the other researchers looked at exoplanets similar in size to Earth, including a group of seven in the TRAPPIST-1 system, 39 light-years from Earth. Fox News, "Milky Way Galaxy could have 'ocean worlds' all over, NASA says," 23 June 2020 First, a paleontologist friend who worked on other time periods argued that of course both the asteroid and volcanism were responsible. Quanta Magazine, "A Rapid End Strikes the Dinosaur Extinction Debate," 25 Mar. 2020 This process, known as subduction, is the major driver of volcanism worldwide. Steve Olson, Scientific American, "Inside Mount Saint Helens, Scientists Find Clues to Eruption Prediction," 1 Nov. 2017 And this could have led to sedimentary volcanism, where pieces of rock and water erupt as mud. Ashley Strickland, CNN, "Some mud flows like lava on Mars, study says," 18 May 2020 But a thousand kilometers to the west, in northeast China, there are remnants of old volcanism. Scott K. Johnson, Ars Technica, "Volcanoes where they shouldn’t be? Maybe it’s a mantle sponge," 28 Feb. 2020

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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The first known use of volcanism was in 1830

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Statistics for volcanism

Last Updated

22 Jul 2020

Cite this Entry

“Volcanism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/volcanism. Accessed 3 Aug. 2020.

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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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