(anatomy) Any of the small cartilage-less branches of a bronchus.

plural of bronchiole

(pathology) Inflammation of the bronchioles; especially common in young children.

The formation of bronchioles.

One of the smallest bronchioles that do not participate in the gas exchanges that happen in the lung.

Any of the downstream bronchioles that already engage in blood-air gas exchange, in contrast to the upstream conducting-zone bronchioles that merely transport air.

plural of respiratory bronchiole

plural of terminal bronchiole

A rare and irreversible form of obstructive lung disease in which the bronchioles are compressed and narrowed by fibrosis and/or inflammation.

(medicine) Dilatation of the bronchioles.