Definition of "fumaroles" [fumaroles]

• Plural form of fumarole. (noun)

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• "As gasses escape fissures in the side of the mountain, the melt through the snow pack-hollowing out the huge caves-and creating towering spires known as fumaroles when they hit the sub-zero air and instantly freeze. %userName% took away %your% star %userName% promoted %your% comment %userName% approved %you% %userName% took away %your% approval"
• "Each of the holes, known as fumaroles, is blowing steam and volcanic gas 2,000 feet into the air."
• "Many of those in Terrence Malick's exquisite and also exasperating new film—his fifth in a career spanning four decades —are remarkable for their grandeur: billowing volcanoes, churning geysers, hissing fumaroles, spiral nebulas seen through the eye of the Hubble space telescope."