narcodiagnosis

noun
nar·​co·​di·​ag·​no·​sis | \ -ˌdī-ig-ˈnō-səs How to pronounce narcodiagnosis (audio) \
plural narcodiagnoses\ -​ˌsēz How to pronounce narcodiagnoses (audio) \

Medical Definition of narcodiagnosis

: the use of sedative or hypnotic drugs for diagnostic purposes (as in psychiatry)