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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.

See Examples For:

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

From Science Daily ● May 5, 2026

Notably, this happened without the presence of a deep mantle plume, challenging long-held assumptions about the source of such volcanism.

From Science Daily ● Nov. 12, 2025

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

As we found volcanism to be a macrotelluric manifestation of functional sulphur, we find in the process of snow-formation a corresponding manifestation of functional phosphorus.

From Man or Matter by Ernst Lehrs

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