Definition of volcano in US English:

volcano

noun

  • 1A mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.

    • ‘Scientists have used robotic vehicles on Earth to explore active volcanoes and the ocean floors.’
    • ‘Some of the salt in the oceans comes from undersea volcanoes and hydrothermal vents.’
    • ‘In geology, students learn about the structure of the Earth, volcanoes and the formation and recycling of rocks.’
    • ‘This heated layer is the source of lava we see in volcanos, the source of heat that drives hot springs and geysers, and the source of raw material which pushes up the mid-oceanic ridges and forms new ocean floor.’
    • ‘Our understanding of how volcanoes degas has taken major steps forward in the past 20 years.’
    • ‘They fled their homes with a few personal belongings, escaping the acrid sulphuric fumes and lava of an erupting volcano.’
    • ‘This structure resembles volcanoes on Earth and Venus, with overlapping layers of material from a series of flows.’
    • ‘The presence of faults within the edifice of the volcano may influence the transport and degassing of the magma.’
    • ‘The landscape ranges from volcanoes and Afro-alpine mountains to savanna and lowland rain forest.’
    • ‘Variations in composition within each series reflect differentiation in magma chambers under volcanoes.’
    • ‘It has rainforests, snowpeaked mountains, volcanoes, tropical beaches and lush green pasture land.’
    • ‘It looked a pleasant enough place from the ship even if, according to the guide books, it was built in the crater of an extinct volcano.’
    • ‘Visually, the city keeps you enthralled, with its setting atop a series of extinct volcanoes and rocky crags.’
    • ‘This kind of event occurs on all the Canary Islands and other oceanic shield volcanoes.’
    • ‘This area had not been affected by the main pyroclastic flows from the volcano.’
    • ‘Shield volcanoes tend to erupt non-explosively, mainly pouring out huge volumes of fluid lava.’
    • ‘A primary conclusion from our work is that magmas beneath volcanoes such as Nevado del Ruiz release significant gas during periods of quiescence.’
    • ‘They may be caused by a complex system of faults or by changes in the volcano's magma plumbing system.’
    • ‘The two that are most often in the news are shield volcanoes, as seen in Hawaii, and composite volcanoes.’
    • ‘The temperature of the lava, about 1,500 kelvins, is similar to that of the hottest volcanoes on Earth.’
    1. 1.1 An intense suppressed emotion or situation liable to burst out suddenly.
      ‘what volcano of emotion must have been boiling inside that youngster’
      • ‘Instead, you ran rivers of blood in our land, and we blew a volcano of anger in your land.’
      • ‘When I finally reached the second stage of anger it exploded like a volcano of hate inside me.’
      • ‘What they did not bargain for was that the war would awaken a volcano of sectarian resentment.’
      • ‘Though one realises with a pang, that these smiles contained in themselves a volcano of torment and angst.’

Origin

Early 17th century: from Italian, from Latin Volcanus ‘Vulcan’.

Pronunciation

volcano

/vɑlˈkeɪnoʊ//välˈkānō/