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volcanism

American  
[vol-kuh-niz-uhm] / ˈvɒl kəˌnɪz əm /

noun

Geology.
  1. the phenomena connected with volcanoes and volcanic activity.


volcanism British  
/ ˈvɒlkəˌnɪzəm /

noun

  1. those processes collectively that result in the formation of volcanoes and their products

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of volcanism

First recorded in 1865–70; volcan(o) + -ism

Vocabulary lists containing volcanism

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In this case, recent geological activity such as widespread volcanism would have resurfaced the planet.

From Science Daily • May 5, 2026

But if many erupted, he says, a feedback loop could take hold, with ice loss leading to more volcanism, and more eruptions to more ice loss and consequent sea-level rise.

From Science Magazine • Dec. 2, 2024

“Iceland is essentially one of the best places in the world to study this … because we have both volcanism and glaciers,” volcanologist Michelle Parks of the Icelandic Meteorological Office told Reuters.

From Salon • Oct. 28, 2024

"What's remarkable is that Mars' volcanism has incredible similarities, but also differences, to Earth," said Day.

From Science Daily • May 31, 2024

A contrast, indeed, between this quiet emergence of forms from levity into gravity, and the form-denying volcanism surging up out of gravity into levity, as shown by the ever-restless activity of the Solfatara.

From Man or Matter by Lehrs, Ernst

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