electrokymograph

noun

elec·​tro·​ky·​mo·​graph -ˈkī-mə-ˌgraf 

: an instrument for recording graphically the motion of the heart as seen in silhouette on a fluoroscopic screen

electrokymographic

-ˌkī-mə-ˈgraf-ik 

adjective

electrokymographically

-i-k(ə-)lē 

adverb

electrokymography

-kī-ˈmäg-rə-fē 

noun

plural electrokymographies