- an instrument that amplifies small sounds, esp within the human body
C20: from phono- + endo- + -scope
Examples from the Web for phonendoscope
The binaural stethoscope was invented by Cammann in 1854, and a later improvement is the phonendoscope, by Bianchi.The Progress of Invention in the Nineteenth Century.
Edward W. Byrn
- A stethoscope that intensifies auscultatory sounds.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.