das Randthema
Translation
marginal topic, side issue, fringe topic
Examples
Das war nur ein Randthema der Konferenz.
That was only a marginal topic of the conference.
Wir sollten uns nicht mit Randthemen aufhalten.
We shouldn't dwell on side issues.
Grammar Patterns
to be a side issue ((sth.)) is a side issue That is just a side issue.
Similar Words
Synonyms: Nebensache, Nebenthema; Antonyms: Hauptthema, Kernthema
Etymology
From 'Rand' (edge, margin) + 'Thema' (topic). Literally an 'edge topic'.
Memory Tips
Imagine a topic that's pushed to the 'Rand' (edge/margin) of a discussion, making it secondary.