An instrument composed of a tambour with recording lever attachment, by means of which a tracing is made of the movements of the heart muscle. ... Origin: myo-+ G. Kardia, heart, + grapho, to record ... (05 Mar 2000) ... 
(mi″o-kahr´de-o-graf″) an instrument for making tracings of movements of heart muscles.
Type: Term Pronunciation: mī′ō-kar′dē-ō-graf Definitions: 1. An instrument composed of a tambour with recording lever attachment, by means of which a tracing is made of the movements of the heart muscle.
an instrument for recording the movements of the heart.