Final answer:
The correct pronunciation of the medical term is auscultation, which involves using a stethoscope to listen to breath sounds.
Step-by-step explanation:
The correct pronunciation of the medical word that uses a stethoscope to listen to breath sounds is auscultation. Auscultation is a diagnostic technique where the clinician listens to the patient's internal body sounds using a stethoscope. It is commonly used to assess the state of the patient's heart.