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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:

Those areas could become priority targets for future missions seeking signs of active tectonics or volcanism.

From Science Daily ● Jul. 25, 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

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

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

Lassen Peak, some wise men believe, is the last exhibit of activity in the dying volcanism of the Cascade Mountains.

From The Book of the National Parks by Robert Sterling Yard

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