There are multiple definitions - click on the translation that matches your context.

Trennung

Substantiv

full

separation

noun

Definitions of separation

(also: legal separation; limited divorce) a situation where two married people or two people in a civil partnership decide not to live together, especially when there are problems in the relationship

I only saw my father once during my parents' separation.

the act of dividing something into different parts, or the fact that they are divided into different parts

Lord Griffiths called for a formal separation of powers between the prime minister and the parliament.