(n)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, Syn.cardiograph
(n)diagnostic procedure consisting of recording the activity of the heart electronically with a cardiograph (and producing a cardiogram), Syn.electrocardiography
n. [ Gr. kardi`a heart + -graph. ] (Med.) An instrument which, when placed in contact with the chest, will register graphically the comparative duration and intensity of the heart's movements. [ 1913 Webster ]