[foh-nuh-kahr-dee-uh-graf, -grahf]
noun Medicine/Medical.
an instrument for graphically recording the sound of the heartbeat.

1925–30; phono- + cardiograph

phonocardiography [foh-nuh-kahr-dee-og-ruh-fee] , noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

phonocardiograph pho·no·car·di·o·graph (fō'nə-kär'dē-ə-grāf')
A device consisting of microphones and recording equipment used to monitor and record heart sounds and murmurs.

pho'no·car'di·og'ra·phy (-ŏg'rə-fē) n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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