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volcanism

[vol-kuh-niz-uh m]
noun Geology.
  1. the phenomena connected with volcanoes and volcanic activity.
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Also vulcanism.

Origin of volcanism

First recorded in 1865–70; volcan(o) + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for volcanism

Historical Examples

  • Volcanoes and volcanism are not restricted to the planet Earth.

    Volcanoes

    Robert I. Tilling


British Dictionary definitions for volcanism

volcanism

vulcanism

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

Word Origin and History for volcanism

n.

1869, from French volcanisme; see volcano + -ism.

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Online Etymology Dictionary, © 2010 Douglas Harper