பொருள் : Medical instrument that records electric currents associated with contractions of the heart.
ஒத்த சொற்கள் : electrocardiograph
பொருள் : 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.
ஒத்த சொற்கள் : ballistocardiograph