(Q1174)

In German word formation, we don't know this type. The word "Synapsie" is only used in reference to the French concept. German "Zusammenrückung" might be close, but is not the same as we don't have formations with prepositions. For more details see https://grammis.ids-mannheim.de/systematische-grammatik/598 - I'm not sure we should give the German equivalent if it only refers to French?