a stethoscope containing an apparatus that greatly amplifies the sounds heard.
Origin of microstethoscope
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
A stethoscope that amplifies the sounds heard.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.