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.

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

Relating to or produced by or consisting of volcanoes

“volcanic steam”

“volcanic islands such as Iceland”

“a volcanic cone is a conical mountain or hill built up of material from volcanic eruptions”

Explosively unstable

“a volcanic temper”

Igneous rock produced by eruption and solidified on or near the earth's surface; rhyolite or andesite or basalt

“volcanic rock includes the volcanic glass obsidian”

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.”