"What's the plural of bronchus?"

The plural of bronchus is bronchi.

Definition of bronchus:

A bronchus is any of the major air passages in the lungs that diverge from the windpipe (trachea) and lead to the lungs.

Single Examples:
1. She experienced difficulty breathing due to inflammation in the bronchus.
2. The doctor examined her bronchus using a bronchoscope.
3. He received treatment to clear the blockage in his bronchus.
Plural Examples:
1. They studied the structure and function of the bronchi in respiratory physiology.
2. Chronic bronchitis affects the lining of the bronchi.
3. We learned about the diseases that can affect the bronchi.