an instrument used to detect and study sounds produced in the body, esp by the heart and lungs, consisting of a sound-transmitting disc connected by a pair of tubes to earpieces
stethoscopic /-ʹskopik/ adj
stethoscopically /-ʹskopikli/ adv
stethoscopy /steʹthoskəpi/ noun
[French stéthoscope, from Greek stēthos chest + -scope]