Word Study
bronchial
CIDE DICTIONARY
bronchial, a. [Cf. F. bronchial. See Bronchia.].
Belonging to the bronchi and their ramifications in the lungs. [1913 Webster]
OXFORD DICTIONARY
bronchial, adj. of or relating to the bronchi or bronchioles.
Idiom
bronchial tree the branching system of bronchi and bronchioles conducting air from the windpipe to the lungs.
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