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; also referred to as rhonchi.

Note: Auscultation is the process of listening for sounds within the body by ear unassisted or using a stethoscope. To listen to a patient's rhonchi, use this link: http://www.practicalclinicalskills.com/auscultation-lesson-description.aspx?coursecaseorder=5&courseid=201