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

 

caldera

 noun
noun
BrE BrE//kɒlˈdeərə//
 
, BrE//kɒlˈdɪərə//
 
; NAmE NAmE//kælˈdera//
 
, NAmE//kælˈdɪra//
 
, NAmE//kɔːlˈdera//
 
, NAmE//kɔːlˈdɪra//
 
(specialist)
 
jump to other results
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