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volcanism

[vol-kuh-niz-uh m] /ˈvɒl kəˌnɪz əm/
noun, Geology
1.
the phenomena connected with volcanoes and volcanic activity.
Also, vulcanism.
Origin of volcanism
1865-1870
1865-70; volcan(o) + -ism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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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

/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
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Word Origin and History for volcanism
n.

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

Online Etymology Dictionary, © 2010 Douglas Harper
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Difficulty index for volcanism

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Word Value for volcanism

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21
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