1. medical instrument that records electric currents associated with contractions of the heart

Similar word(s): electrocardiograph

Definition categories: man–made

2. 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

Similar word(s): ballistocardiograph

Definition categories: man–made