hourglass murmur

hour·glass mur·mur

one in which there are two areas of maximum loudness decreasing to a point midway between the two.
Farlex Partner Medical Dictionary © Farlex 2012

hour·glass mur·mur

(owr'glas mŭr'mŭr)
One in which there are two areas of maximum loudness decreasing to a point midway between the two.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012