Pectoriloquy \Pec`to*ril"o*quy\, n. [L. pectus, -oris, the breast + loqui to speak: cf. F. pectoriloquie.] (Med.) The distinct articulation of the sounds of a patient's voice, heard on applying the ear to the chest in auscultation. It usually indicates some morbid change in the lungs or pleural cavity. [1913 Webster]