pyroclastic
/ˌpaɪroʊˈklæstɪk/
adjective
- Relating to or consisting of fragments of rock and lava ejected by a volcanic eruption.
- Scientists study pyroclastic deposits to learn about past eruptions.
- The pyroclastic flow from the volcano destroyed everything in its path.
- The hikers were warned about the danger of pyroclastic surges near the active crater.