English
magnetocardiography
From magneto- + cardiography.
A compound of magneto- + cardiography
Proto-Indo-European *gerbʰ- ‘to carve’
Proto-Hellenic *grə́pʰō ‘to scratch, cut or carve into’
Ancient Greek γρᾰ́φω ‘to scratch, cut into’
Ancient Greek γραφή ‘drawing’
English cardiography
Today it means
noun The measurement of magnetic fields produced by electrical activity in the heart.
Language periods are conventional ranges, not dates for this word.
Etymograph / magnetocardiography