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volcanic

DEFINITIONS OF: volcanic

1

adj 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”
Synonyms
extrusive
of rock material; forced out while molten through cracks in the earth's surface

adj 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”

adj explosively unstable

“a volcanic temper”
Synonyms
unstable
lacking stability or fixity or firmness
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