volcanism
/ˈvɑlkəˌnɪzəm/
noun
- The natural processes and activity associated with volcanoes, including the eruption of lava, ash, and gases from the Earth's crust.
- Scientists study volcanism to better predict eruptions and protect nearby communities.
- The region's volcanism created fertile soil that is excellent for farming.
- Volcanism has shaped much of the landscape of the Hawaiian Islands.