a sound of less than usual intensity in percussion or auscultation.
Origin of hypophonesis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
A noticeable diminution of the perceived sound in auscultation or percussion.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.