English
cardioversion
From cardio- (“heart”) + -version (“changing”).
Formed from cardio- ‘heart’ + -version ‘changing’
Proto-Indo-European *ḱerd- ‘heart’
Proto-Indo-European *ḱḗr ‘heart’
Proto-Indo-European *ḱr̥díyeh₂
Proto-Hellenic *kərdíyā
Ancient Greek καρδία ‘heart’
English cardio-
Today it means
noun The treatment of cardiac arrhythmia, either with medication or by use of a machine (a cardioverter) that delivers a controlled electric current.
Language periods are conventional ranges, not dates for this word.
Etymograph / cardioversion