https://doi.org/10.1351/goldbook.15602
Abnormal respiratory sounds heard on auscultation of the chest, produced by passage of air through passages which contain secretion or exudate or which are constricted by spasm or a thickening of their walls.
Note: Auscultation is the process of listening for sounds within the body by ear unassisted or using a stethoscope.
See also: rhonchi