- cardiograph (n.)
- 1867, from cardio- + -graph "something written," from Greek graphe "writing," from graphein "to write, express by written characters," earlier "to draw, represent by lines drawn" (see -graphy).
Although the work does not treat of the recent means of diagnosis--the thermometer, laryngoscope, cardiograph, etc.,--still it is complete as far as it goes. [book review in "Medical Investigator," May 1867, p.94]