Where does “διορθώσις” come from?

διορθώσις (Greek) comes from Greek διορθόω, from Ancient Greek ορθός.

Ancestry of “διορθώσις”, step by step

Step	Language	Word	Meaning
1	Greek	διορθόω	—
2	Ancient Greek	ορθός	—

διορθώσις — Etymology, Origin & Word History | Etymology Explorer