Volcanism

Pronunciation: /ˈvoʊˈɛɫˈkænˈɪzəm/

Volcanism (noun)

  1. Natural activity where hot rock and gases rise from inside Earth and reach the surface, often forming volcanoes.
  2. A time when volcanoes in a region are active, including eruptions and related ground changes.

Examples

  • Volcanism releases Earth heat through eruptions.
  • Eruptions can happen because volcanism moves heat upward.