phonocardiograph

[ foh-nuh-kahr-dee-uh-graf, -grahf ]

noun

, Medicine/Medical.

1. an instrument for graphically recording the sound of the heartbeat.

Other Words From

• pho·no·car·di·og·ra·phy [foh-n, uh, -kahr-dee-, og, -r, uh, -fee], noun

Word History and Origins

Origin of phonocardiograph¹

First recorded in 1925–30; phono- + cardiograph

Example Sentences

At first the electrocardiograph gave normal readings; so did the phonocardiograph.

From Time Magazine Archive