defibrillation
Concise Oxford English Dictionary © 2008 Oxford University Press:
defibrillation /ˌdiːfɪbrɪˈleɪʃ(ə)n/
▶noun Medicine the stopping of fibrillation of the heart by administering a controlled electric shock, to allow restoration of the normal rhythm.
– derivatives
defibrillate verb,
defibrillator noun.
defibrillate verb,
defibrillator noun.
'defibrillation' also found in these Oxford entries:

