volcanic

Of or pertaining to a volcano or volcanoes.

volcanic heat

volcanic activity

Produced by a volcano, or, more generally, by igneous agencies.

volcanic tufa

volcanic ash

Changed or affected by the heat of a volcano.

Reminiscent of a volcano; explosive, violent, full of suppressed anger, energy etc.

Jo rose indignified, Vanessa following in her volcanic wake.

With that the system was complete, and ready to have its disastrous effect on Martin Luther's volcanic temper.

A volcanic rock.

The Ellesmere Island Volcanics are a Late Cretaceous volcanic group of volcanoes and lava flows in the Qikiqtaaluk Region of northern Ellesmere Island, Nunavut, Canada.