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caldera

American  
[kal-der-uh, kawl-] / kælˈdɛr ə, kɔl- /

noun

  1. a large, basinlike depression resulting from the explosion or collapse of the center of a volcano.

caldera British  
/ kælˈdɛərə, ˈkɔːldərə /

noun

  1. a large basin-shaped crater at the top of a volcano, formed by the collapse or explosion of the cone See cirque

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
caldera Scientific  
/ kăl-dâr′ə,-dîr′ə,käl- /

  1. 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.

Etymology

Origin of caldera

1860–65; < Spanish Caldera, name of a crater on Canary Islands, literally, cauldron < Late Latin caldāria, noun use of feminine of caldārius of warming; caldarium

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.