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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Rocks nabbed by China’s robotic lunar sample return missions, Chang’e 5 and 6, indicate active volcanism there up until at least two billion years ago. Robin George Andrews, Scientific American, 7 Apr. 2026 Lunar experts Back here on Earth, a team of scientists are assisting the crew in spotting features on the moon, from cratering and volcanism to scouting out evidence for lunar ice deposits. Leonard David, Space.com, 6 Apr. 2026 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 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 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

Browse Nearby Words

Cite this Entry

“Volcanism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/volcanism. Accessed 23 Apr. 2026.

More from Merriam-Webster on volcanism

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster