Where does “synodowy” come from?

synodowy (Polish) comes from Polish synod, from French synode, from Latin synodus, from Ancient Greek σύνοδος, from Ancient Greek σῠν-, from Ancient Greek σύν, from Proto-Hellenic *ksún — beside, with.

Ancestry of “synodowy”, step by step

Step	Language	Word	Meaning
1	Polish	synod	synod
2	French	synode	synod
3	Latin	synodus	synod, council
4	Ancient Greek	σύνοδος	assembly, meeting; political associations,...
5	Ancient Greek	σῠν-	together; with, together
6	Ancient Greek	σύν	beside, with
7	Proto-Hellenic	*ksún	beside, with

Every word from Proto-Hellenic *ksún →Every word from Ancient Greek σῠν- →Every word from Ancient Greek σύν →