English
electrocardiophonography
From electro- + cardio- + phonography.
Formed from electro- + cardio- + phonography
Proto-Indo-European *ḱerd- ‘heart’
Proto-Indo-European *ḱḗr ‘heart’
Proto-Indo-European *ḱr̥díyeh₂
Proto-Hellenic *kərdíyā
Ancient Greek καρδία ‘heart’
English cardio-
French phonographie
English phonography
Today it means
noun The electrical recording of the sounds of the heart
Language periods are conventional ranges, not dates for this word.
Etymograph / electrocardiophonography