A reference to or pertaining to the act of listening to sounds arising within organs; such as, the lungs, as an aid to medical diagnosis and treatment.

A rale (intermittent crackling or bubbling sound produced by fluid in the air passages and air sacs of the lungs), murmur (soft blowing or fluttering sound), bruit (significant sound heard inside the body caused by turbulent blood flow within the heart or blood vessels), fremitus (vibration or tremor, resulting from a physical action such as speaking or coughing, felt by hand and used to assess whether the chest is affected by disease), or other sounds heard during the auscultation examinations of the chest or abdomen.

Auscultatory percussion done by tapping with one forefinger the second joint of the other forefinger applied perpendicularly to the body part being examined.