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n. Volcanic force or activity.

n. The phenomena associated with volcanic activity.

n. Any of the natural phenomena and processes associated with the action of volcanos, geysers and fumaroles

n. Volcanic power or action; volcanicity.

n. The phenomena connected with volcanoes and volcanic activity.

n. the phenomena associated with volcanic activity

"As Italy is one of the most recently developed parts of the mainland and of the crust that has risen above the waters, it is subject to the phenomena that are due to that internal energy of the earth called volcanism, which is manifested in the various forms of volcanic activity, in earthquakes and in microseisms."

geological phenomenon   

volcanize    volcanic    volcanist    volcanology   

volcanicity   

biodata    overgrazing    resurfacing    octopi    d-lighting