volcano

Definition

A vent or fissure on the surface of a planet (usually in a mountainous form) with a magma chamber attached to the mantle of a planet or moon, periodically erupting forth lava and volcanic gases onto the surface.

Etymology

From Italian vulcano, from Vulcano (“a small volcanic island in the Tyrrhenian Sea”), from Latin Vulcānus (“Vulcan, the Roman god of fire and metalworking”). Doublet of bolcane and Vulcan.

Example Sentences

• "Iceland's volcanoes are among the most active on Earth."

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