Where does “psychosynthèse” come from?

psychosynthèse (French) comes from French synthèse, from Latin synthesis, from Ancient Greek σύνθεσις, from Ancient Greek συντίθημι, from Ancient Greek σῠν-, from Ancient Greek σύν, from Proto-Hellenic *ksún — beside, with.

psychosynthèse (French): psychosynthesis

Definitions

psychosynthesis

Ancestry of “psychosynthèse”, step by step

Step	Language	Word	Meaning
1	French	synthèse	synthesis; summary, overview
2	Latin	synthesis	A collection or reunion of many objects of...
3	Ancient Greek	σύνθεσις	a putting together, composition, combination,...
4	Ancient Greek	συντίθημι	to assemble, put together
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 συντίθημι →