what isthe exact definition of "volcano" ?

Adriana

Volcano: A vent in the surface of the Earth through which magma and associated gases and ash erupt; also, the form or structure, usually conical, that is produced by the ejected material. From: Bates, R.L., and Jackson, J.A., Glossary of Geology (American Geological Institute, 1987)

Sincerely,
Steve Mattox

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