Definition of caldera noun from the Oxford Advanced Learner's Dictionary



BrE BrE//kɒlˈdeərə//
, BrE//kɒlˈdɪərə//
; NAmE NAmE//kælˈdera//
, NAmE//kælˈdɪra//
, NAmE//kɔːlˈdera//
, NAmE//kɔːlˈdɪra//
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a very large hole in the top of a volcano, usually caused by an eruption Word Origin late 17th cent.: from Spanish, from late Latin caldaria ‘boiling pot’.
See the Oxford Advanced American Dictionary entry: caldera