Where does “sinapsi” come from?

sinapsi (Catalan) comes from Ancient Greek σύναψις, from Ancient Greek συνάπτω, from Ancient Greek σῠν-, from Ancient Greek σύν, from Proto-Hellenic *ksún — beside, with.

sinapsi (Catalan): synapse

Definitions

synapse

Ancestry of “sinapsi”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	σύναψις	contact; point or line of junction; union,...
2	Ancient Greek	συνάπτω	I join together, connect
3	Ancient Greek	σῠν-	together; with, together
4	Ancient Greek	σύν	beside, with
5	Proto-Hellenic	*ksún	beside, with

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