adj. Relating to or located in both the trachea and the bronchi.
the GNU version of the Collaborative International Dictionary of English
adj. Pertaining both to the tracheal and bronchial tubes, or to their junction; -- said of the syrinx of certain birds.
The Century Dictionary and Cyclopedia
Pertaining to the trachea and the bronchi: same as bronchotracheal.
Word Usage
"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)."