The caldera at the Santorini volcano.
caldera definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a broad, craterlike basin of a volcano, formed by an explosion or by collapse of the cone
Origin: Spanish ; from Classical Latin caldarium: see caldarium
caldera definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A large crater formed by volcanic explosion or by collapse of a volcanic cone.
Origin: Spanish, cauldron, caldera, from Late Latin caldāria; see cauldron.
caldera - Computer Definition
caldera - Science Definition
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.