Definition of bronchial adjective from the Oxford Advanced American Dictionary

 

bronchial

 adjective
adjective
NAmE//ˈbrɑŋkiəl//
 
[usually before noun](medical)
 
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of or affecting the two main branches of the windpipe (calledbronchial tubes) leading to the lungs bronchial pneumonia bronchial asthma
See the Oxford Advanced Learner's Dictionary entry: bronchial