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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.

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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

“The intriguing feature could improve our understanding of volcanism not only on Io but on other worlds as well.”

From Salon ● Feb. 3, 2025

“Erebus helps us understand what other volcanism in the region could look like.”

From Science Magazine ● Dec. 2, 2024

To better understand its volcanism, scientists hoped to catch a Venusian eruption in the act.

From New York Times ● May 27, 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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