Where does “διαγνωστικός” come from?

διαγνωστικός (Ancient Greek) comes from Ancient Greek διάγνωσις, from Ancient Greek διαγιγνώσκω, from Ancient Greek δῐᾰ-, from Ancient Greek διά, from Proto-Indo-European dwís, from Proto-Indo-European dwóh₁ — two.

διαγνωστικός (Ancient Greek): able to distinguish

Definitions

able to distinguish

Ancestry of “διαγνωστικός”, step by step

διαγνωστικός traces back through two separate lines of ancestry.

via Ancient Greek διάγνωσις

Step	Language	Word	Meaning
1	Ancient Greek	διάγνωσις	distinguishing
2	Ancient Greek	διαγιγνώσκω	to discern; distinguish, discern
3	Ancient Greek	δῐᾰ-	apart; through, across; through; in different...
4	Ancient Greek	διά	throughout
5	Proto-Indo-European	dwís	twice, doubly; in two
6	Proto-Indo-European	dwóh₁	two

via Ancient Greek γνωστικός

Step	Language	Word	Meaning
1	Ancient Greek	γνωστικός	of or for knowing, cognitive
2	Ancient Greek	γνῶσις	inquiry; knowledge; fame

Words derived from “διαγνωστικός”

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