Definition of pectoriloquy in US English:

pectoriloquy

noun

Medicine
rare, historical
  • 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.

Pronunciation

pectoriloquy

/ˌpɛktəˈrɪləkwi/