volcanic

Reading level: hard

Estimated CEFR level: C1 — Advanced

Estimated from word frequency; not an official CEFR classification.

Definition

adjective relating to or produced by or consisting of volcanoes
adjective explosively unstable
adjective igneous rock produced by eruption and solidified on or near the earth's surface; rhyolite or andesite or basalt

From French volcanique, from volcan (“volcano”); and/or directly from volcan(o) + -ic.

Its volcanic origin was unmistakable. — Twenty Thousand Leagues Under the Seas: An Underwater Tour of the World, Jules Verne
A volcanic tube full of blue clay." — The Lost World, Arthur Conan Doyle
One could not mistake its volcanic origin. — Twenty Thousand Leagues under the Sea, Jules Verne

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