Definition of "bronchial" [bron•chi•al]

• Of or relating to the bronchi, the bronchia, or the bronchioles. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "On examining more minutely with the magnifier, open-mouthed bronchial twigs, and very small blood-vessels, were seen plugged up with solid and fluid carbon, and, from the appearance of the morbid structure, it was manifest, that the ulcerative process had effected a complete disorganization of the _bronchial_ tubes of every calibre, while the smaller _arterial_ vessels had alone suffered, leaving the larger ones entire. ["
• "The last time I kept up the cycling through the winter was the last time I was properly ill with a long-term bronchial cough that was hard to shift."
• "Its posterior part (the so-called saccular lung) has unique thick, muscular walls* that allows stored air to be forced forward into the functional anterior part (termed the bronchial lung) and the anterior projection of the lung (the so-called tracheal lung) is large and extends well forwards relative to that of terrestrial snakes."