Where does “apodosis” come from?

apodosis (Late Latin) comes from Ancient Greek ἀπόδοσις, from Ancient Greek -σῐς, from Ancient Greek -τις, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

Ancestry of “apodosis”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἀπόδοσις	giving back, restitution, return; payment;...
2	Ancient Greek	-σῐς	"suffix forming nouns"
3	Ancient Greek	-τις	retained after dentals
4	Proto-Indo-European	-tis	Derives abstract/action nouns from verb roots

Every word from Proto-Indo-European -tis →Every word from Ancient Greek -σῐς →Every word from Ancient Greek -τις →