1) Medical instrument 
• (a.) Of or pertaining to, or produced by, a cardiograph.
Car`di·o·graph'ic adjective (Physiol.) Of or pertaining to, or produced by, a cardiograph. 
[adj] - of or relating to a cardiograph
cardiography, cardiograph, cardiographic An instrument that registers the motions of the heart by tracing a curve on paper, etc.
adjective of or relating to a cardiograph