noun vol·ca·no \väl-ˈkā-(ˌ)nō, vl-\

: a mountain with a hole in the top or side that sometimes sends out rocks, ash, lava, etc., in a sudden explosion (called an eruption)

plural vol·ca·noes or vol·ca·nos

Full Definition of VOLCANO

:  a vent in the crust of the earth or another planet or a moon from which usually molten or hot rock and steam issue; also :  a hill or mountain composed wholly or in part of the ejected material
:  something of explosively violent potential

Examples of VOLCANO

  1. The volcano last erupted 25 years ago.
  2. <beset by prolonged heat and lingering racial tension, the city was like a seething volcano>

Illustration of VOLCANO

Origin of VOLCANO

Italian or Spanish; Italian vulcano, from Spanish volcán, ultimately from Latin Volcanus Vulcan
First Known Use: 1613

Other Geology Terms

anthracite, boulder, cwm, erratic, igneous, intrusive, mesa, sedimentary, silt, swale


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May 24, 2015
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