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[kal-der-uh, kawl-] /kælˈdɛr ə, kɔl-/
a large, basinlike depression resulting from the explosion or collapse of the center of a volcano.
1860-65; < Spanish Caldera, name of a crater on Canary Islands, literally, cauldron < Late Latin caldāria, noun use of feminine of caldārius of warming; see caldarium
Can be confused
caldera, fumarole, geyser, volcano. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for calderas


/kælˈdɛərə; ˈkɔːldərə/
a large basin-shaped crater at the top of a volcano, formed by the collapse or explosion of the cone See cirque
Word Origin
C19: from Spanish Caldera (literally: cauldron), name of a crater in the Canary Islands
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for calderas
1865, "cavity on the summit of a volcano," from Sp. caldera "cauldron, kettle," from L. caldarium, caldarius "pertaining to warming," from calidus "warm, hot" (see calorie).
Online Etymology Dictionary, © 2010 Douglas Harper
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calderas in Science
  (kāl-dâr'ə, -dîr'ə, käl-)   
A large, roughly circular crater left after a volcanic explosion or the collapse of a volcanic cone. Calderas are typically much wider in diameter than the openings of the vents from which they were formed.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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