Source : Webster's Revised Unabridged Dictionary (1913)

Cardiography \Car`di*og"ra*phy\, n.
   1. Description of the heart.

   2. (Physiol.) Examination by the cardiograph.

Source : WordNet®

cardiography
     n : diagnostic procedure consisting of recording the activity of
         the heart electronically with a cardiograph (and
         producing a cardiogram) [syn: {electrocardiography}]