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volcano
[ vol-key-noh ]
noun
- a vent in the earth's crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals.
- a mountain or hill, usually having a cuplike crater at the summit, formed around such a vent from the ash and lava expelled through it.
volcano
/ vɒlˈkeɪnəʊ /
noun
- an opening in the earth's crust from which molten lava, rock fragments, ashes, dust, and gases are ejected from below the earth's surface
- a mountain formed from volcanic material ejected from a vent in a central crater
volcano
/ vŏl-kā′nō /
- An opening in the Earth's crust from which lava, ash, and hot gases flow or are ejected during an eruption.
- A usually cone-shaped mountain formed by the materials issuing from such an opening. Volcanoes are usually associated with plate boundaries but can also occur within the interior areas of a tectonic plate. Their shape is directly related to the type of magma that flows from them—the more viscous the magma, the steeper the sides of the volcano.
- ◆ A volcano composed of gently sloping sheets of basaltic lava from successive volcanic eruptions is called a shield volcano . The lava flows associated with shield volcanos, such as Mauna Loa, on Hawaii, are very fluid.
- ◆ A volcano composed of steep, alternating layers of lava and pyroclastic materials, including ash, is called a stratovolcano . Stratovolcanos are associated with relatively viscous lava and with explosive eruptions. They are the most common form of large continental volcanos. Mount Vesuvius, Mount Fuji, and Mount St. Helens are stratovolcanos.
- Also called composite volcano
- See more at hot spot
volcano
- A cone-shaped mountain or hill created by molten material that rises from the interior of the Earth to the surface.
Notes
Word History and Origins
Word History and Origins
Origin of volcano1
Example Sentences
And as we left, spears of sunlight painted the top of the nearby volcano Galeras.
Standing on the edge of the Burfell volcano, you realize what a fragile construct modern civilization is.
It ends with Godzilla lured away from Tokyo with a bird call and trapped in a volcano.
When the volcano blew its top, thousands perished, immolated by fire, boiling magma, and ash.
This week they got Mike Tyson and Razor Ruddock over at the Mirage, where the fake volcano blows up every twenty minutes.
A volcano broke out in the island of St. George, one of the Azores.
Fujiyama, the noted volcano of Japan, is twelve thousand three hundred and sixty-five feet high.
And what was a mere laughing, crying child of a man like Aristide Pujol in front of a Ducksmith volcano?
Torrents of lava poured over the sides of the volcano and destroyed whole villages on the shores of the lake.
Outwardly cold, Sir Henry seemed to his youthful observer, who now knew him better, to resemble a volcano coated with ice.
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