Definition of "tracheobronchial" []

• Of or relating to the trachea and the bronchi. (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.

• "The cells stimulated include the white blood cells known as monocytes, neutrophils and natural killer cells and the epithelial cells that line the respiratory tract (nose, tracheobronchial tree and lungs)."
• "There are three basic regions to the respiratory tract: nasopharyngeal region; tracheobronchial region; and pulmonary region."
• "Particles 2-5 µM can penetrate into the tracheobronchial region."