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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 ?
Frohlich and her team analyzed undersea volcanic calderas in the Tofua arc west of Tongatapu and local slump features just offshore from the boulders and concluded that a caldera collapse was the likely cause of a tsunami large enough to move the boulders.
Following Fisher & Schmincke (1984) terminology, we defined two eruptive epochs with 14 eruptive units separated by paleosoils and erosion surfaces: four ignimbrite units originated from a central vent took place during the FEE which ended with the caldera collapse; and ten units were formed during the SEE as a result of caldera resurgence.
Porphyries have intruded an inlier of volcanics after the caldera collapse. Primary sulphide mineralisation in quartz veins and along fractures occurs as dense quartz stockworks within the intrusives and volcanics.