vulcanism
/ˈvʌlkəˌnɪzəm/
noun
- Volcanic activity or the processes by which volcanoes and related features are formed.
- Scientists study vulcanism to better predict eruptions and protect nearby communities.
- Vulcanism can create new land when lava cools and hardens into rock.
- The island's landscape was shaped by ancient vulcanism millions of years ago.