1.Definition: a medical instrument that measures the mechanical force of cardiac contractions and the amount of blood passing through the heart during a specified period by measuring the recoil of the body as blood is pumped from the ventricles

Related Noun(s):ballistocardiograph

Category: Objects

2.Definition: medical instrument that records electric currents associated with contractions of the heart

Related Noun(s):electrocardiograph

Category: Objects