Definition of volcanism in English:

volcanism

Syllabification: vol·can·ism
Pronunciation: /ˈvälkəˌnizəm, ˈvôl-
 
/
(also vulcanism)

noun

Geology
  • Volcanic activity or phenomena.
    More example sentences
    • Carboniferous volcanism, occurring at converging plates margins, both at the Appalachian and at the Ouachita margins, was decidedly not tholeiitic.
    • This appears to contradict evidence from other areas, particularly Wales where subduction-related volcanism occurs in the late Tremadoc.
    • The scattered nature of the outcrop and the possibility of diachronous volcanism mean that all rocks grouped as Dokhan Volcanic Series may not be coeval.

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