Etymology of the Greek word diagnosis (διάγνωσις)
the Greek word diagnosis, διάγνωσις ((magisterial) examination ('diagnosis'))
derived from the Greek word diagignoskein, διαγιγνώσκω
derived from the Greek word gignoskein, γιγνώσκω
derived from the Proto-Indo-European root *gno-
derived from the Proto-Indo-European root *gnō-