cardiograph
(noun)
noun
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