What does bronchial mean?
"Bronchial" is an adjective meaning relating to the bronchi — the two major tubes that carry air from the windpipe into each lung, where they branch into progressively smaller passageways. The term appears chiefly in medical contexts, whether describing anatomy (the "bronchial tree," the branching network of airways), disease (bronchial asthma, a bronchial infection), or procedures and instruments (bronchial stents, bronchial swabs). Because it belongs largely to clinical register, most people encounter it at the doctor's surgery or in health reporting rather than in everyday speech. It derives ultimately from the Greek "bronkhos," meaning windpipe, which also gives us bronchitis, bronchus, and bronchiole. A useful word for anyone discussing respiratory health precisely, it conveys technical authority while remaining broadly understood by lay readers.
adjectiveRelating to the bronchi, the two main air passages that branch from the windpipe (trachea) into the lungs.
- Relating to the bronchi, the airways branching from the trachea into the lungs.
"The X-ray revealed inflammation in her bronchial passages."
"Asthma is caused by the bronchial airways narrowing and becoming inflamed."
"The surgeon traced the tumour along the bronchial tree during the operation."
Your "bronchial tree" really does look like an upside-down tree — a trunk splitting into ever-finer branches, some less than half a millimetre wide.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of bronchial
"Bronchial" comes from the Greek "bronkhos," meaning windpipe or throat, via its Latinized anatomical form "bronchia." The adjective entered English through post-classical Latin and New Latin medical usage, becoming established as anatomy developed its modern terminology. It shares this Greek root with bronchitis, bronchus, bronchiole, and bronchoscopy, all of which describe parts of the airway or conditions affecting it.
How bronchial is actually used
"Bronchial" is primarily a medical and scientific term, rarely used in casual conversation except in fixed phrases such as "bronchial tubes" or "bronchial asthma." It is almost always attributive, appearing before the noun it modifies.
Easily confused with bronchial
"Bronchial" simply means relating to the bronchi, while "bronchitic" describes someone suffering from bronchitis or symptoms characteristic of it.