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 (kăl-dâr′ə, -dîr′ə, käl-)
A large crater formed by volcanic explosion or by collapse of a volcanic cone.

[Spanish, cauldron, caldera, from Late Latin caldāria; see cauldron.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(kælˈdɛərə; ˈkɔːldərə)
(Physical Geography) a large basin-shaped crater at the top of a volcano, formed by the collapse or explosion of the cone. See cirque
[C19: from Spanish Caldera (literally: cauldron), name of a crater in the Canary Islands]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(kælˈdɛr ə, kɔl-)

n., pl. -ras.
a large, basinlike depression resulting from the explosion or collapse of the center of a volcano.
[1860–65; < Sp Caldera literally, cauldron < Late Latin caldāria]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.caldera - a large crater caused by the violent explosion of a volcano that collapses into a depressioncaldera - a large crater caused by the violent explosion of a volcano that collapses into a depression
crater, volcanic crater - a bowl-shaped geological formation at the top of a volcano
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[kælˈdɛərə] n (Geol) → caldera
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
At calderas, that is large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcanic eruption, vents may also open inside and on its rim.
According to the study, there should be more research in the future to better understand the subtle activity of volcanic calderas and the movements of magma beneath them.
Why trouble yourself with the expense and hassle of going to the famous calderas in the Aegean Sea in the Mediterranean when we have our own beautiful giant caldera just south of Metro Manila?
The Krakatoa type and Valles type calderas are formed by explosive eruption of felsic magma and have negative Bouguer gravimetric anomaly (YOKOYAMA; TAJIMA, 1959; 1960; YOKOYAMA; SAITO, 1965; YOKOYAMA, 1965; 1969) due to pyroclastic fallout deposits.
However, the mechanisms that trigger these eruptions are elusive since the processes occurring in 'normal' volcanic systems cannot simply be scaled up to much larger magma reservoirs beneath calderas. Herein we analyze statistically the size and frequency of volcanic eruptions in Japan and discuss the mechanisms of catastrophic caldera-forming eruptions.
Supervolcanoes, historically called calderas, are enormous craters tens of kilometers in diameter, which erupt hundreds to thousands of cubic kilometers of volcanic ash.
Mechanisms of activity and unrest at large calderas.