Where does “диагноза” come from?

диагноза (Bulgarian) comes from German Diagnose, from French diagnose, from Latin diagnōsis, from Ancient Greek διάγνωσις, from Ancient Greek διαγιγνώσκω, from Ancient Greek δῐᾰ-, from Ancient Greek διά, from Proto-Indo-European dwís — two.

диагноза (Bulgarian): diagnosis

Definitions

diagnosis

Ancestry of “диагноза”, step by step

диагноза traces back through two separate lines of ancestry.

via German Diagnose

Step	Language	Word	Meaning
1	German	Diagnose	diagnosis
2	French	diagnose	diagnosis
3	Latin	diagnōsis	—
4	Ancient Greek	διάγνωσις	distinguishing
5	Ancient Greek	διαγιγνώσκω	to discern; distinguish, discern
6	Ancient Greek	δῐᾰ-	apart; through, across; through; in different...
7	Ancient Greek	διά	throughout
8	Proto-Indo-European	dwís	twice, doubly; in two
9	Proto-Indo-European	dwóh₁	two

via Russian диагноз

Step	Language	Word	Meaning
1	Russian	диагноз	diagnosis
2	Ancient Greek	δῐᾰ́γνωσῐς	distinguishing

Every word from Proto-Indo-European dwóh₁ →Every word from Ancient Greek δῐᾰ- →Every word from Proto-Indo-European dwís →