Definition of cystic fibrosis noun from the Oxford Advanced Learner's Dictionary

 

cystic fibrosis

 noun
noun
BrE BrE//ˌsɪstɪk faɪˈbrəʊsɪs//
 
; NAmE NAmE//ˌsɪstɪk faɪˈbroʊsɪs//
 
[uncountable]
 
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a serious medical condition that some people are born with, in which glands in the lungs and other organs do not work correctly. It often leads to infections and can result in early death.
See the Oxford Advanced American Dictionary entry: cystic fibrosis