English

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

 

corolla

 noun
noun
BrE BrE//kəˈrɒlə//
 
; NAmE NAmE//ˈrɑːlə//
 
, NAmE//ˈroʊlə//
 
(biology)
 
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the ring of petals around the central part of a flower Word Origin late 17th cent. (in the sense ‘little crown’): from Latin, diminutive of corona ‘wreath, crown, chaplet’.
See the Oxford Advanced American Dictionary entry: corolla