Definition of volcanism in English:

volcanism

(also vulcanism)

Pronunciation: /ˈvälkənizəm//ˈvôlkəˌnizəm/

noun

Geology
  • Volcanic activity or phenomena.

    • ‘The radiometric age data combined with the petrography of the volcanics thus indicate two separate events of volcanism in the Danish North Sea.’
    • ‘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.’
    • ‘The onset of volcanism in the region occurred in late Ordovician times, with the earliest eruptions associated with the Eycott and Borrowdale volcanic groups.’

Pronunciation:

volcanism

/ˈvälkənizəm//ˈvôlkəˌnizəm/