English

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

 

caldera

 noun
noun
BrE BrE//kɒlˈdeərə//
 
, BrE//kɒlˈdɪərə//
 
; NAmE NAmE//kælˈdera//
 
, NAmE//kælˈdɪrə//
 
, NAmE//kɔːlˈderə//
 
, NAmE//kɔːlˈdɪrə//
 
(specialist)
 
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a very large hole in the top of a volcano, usually caused by an eruption Word Originlate 17th cent.: from Spanish, from late Latin caldaria ‘boiling pot’.
See the Oxford Advanced American Dictionary entry: caldera