cal·​de·​ra | \ kal-ˈder-ə How to pronounce caldera (audio) , kȯl-, -ˈdir- How to pronounce caldera (audio) \

Definition of caldera

: a volcanic crater that has a diameter many times that of the vent and is formed by collapse of the central part of a volcano or by explosions of extraordinary violence

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A large, bowl-shaped volcanic depression, a caldera forms when the top of a volcanic cone collapses into the space left after magma is ejected during a violent volcanic eruption. Its diameter is many times that of the original vent. The term is Spanish for "caldron." Subsequent minor eruptions may build small cones on the floor of the caldera, and the caldera may still later fill up with water; an example of this is Crater Lake in Oregon.

Examples of caldera in a Sentence

Recent Examples on the Web

The final images are revelatory works of landscape photography in which seemingly lifeless concrete wastelands are transformed into thrilling canyons and calderas, plateaus and peaks. Michael Hardy, WIRED, "You've Never Seen Skateparks Like This Before," 1 July 2019 Responders climbed into the caldera, reached the man and walked him down to the shoreline, where the U.S. Coast Guard was able to retrieve him using a helicopter., "Man rescued after falling 800 feet into Crater Lake caldera," 11 June 2019 Millions of years ago, a volcano erupted in what’s now the Patagonia region of southern Argentina, leaving behind a huge caldera. Peter Wilf, National Geographic, "Prehistoric tree is first of its kind found below the Equator," 6 June 2019 After checking in to our hotel and having lunch, embark on a spectacular hike along the rim of the caldera, ringed by soaring cliffs that overlook the cobalt sea below. National Geographic, "Greek Islands Adventure," 12 June 2019 Earlier in May, park officials warned visitors that rocks and snow near the edge of the caldera were unstable and could give way without warning. CNN, "Man rescued after falling 800 feet into Crater Lake in Oregon," 11 June 2019 Shortly into his journey, the man lost his footing and slipped into the caldera. Andrew Daniels, Popular Mechanics, "Turns Out You Can Fall 70 Feet Into Kīlauea Volcano and Survive," 3 May 2019 Expedition Overview Expedition Overview Climb Mount Zeus, the Cyclades’ highest peak, and hike the soaring cliffs ringing Santorini’s caldera. National Geographic, "Greek Islands Adventure," 12 June 2019 In a separate online message, the National Park Service warned of the danger of the steep caldera walls, in places rising nearly 2,000 feet above the lake surface. CBS News, "Man survives 800-foot cliff fall into volcanic crater in Oregon," 12 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'caldera.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of caldera

1667, in the meaning defined above

History and Etymology for caldera

Spanish, literally, cauldron, from Late Latin caldaria — more at cauldron

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Statistics for caldera

Last Updated

15 Jul 2019

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Time Traveler for caldera

The first known use of caldera was in 1667

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More from Merriam-Webster on caldera

Rhyming Dictionary: Words that rhyme with caldera

Spanish Central: Translation of caldera Encyclopedia article about caldera

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