pectoriloquy
/ˌpɛktəˈrɪləkwi/Medicine. Now rare (chiefly historical )
noun
Transmission of the voice through the chest wall, heard with a stethoscope and indicating either a cavity or consolidation in the lung.
Origin
Early 19th century; earliest use found in The Lancet. From French pectoriloquie from classical Latin pector-, pectus chest, breast + -i- + -loquium from loquī to speak; compare -y.