Where does “зо́на” come from?

зо́на (Russian) comes from Latin zōna, from Ancient Greek ζώνη — belt, sash.

Ancestry of “зо́на”, step by step

Step	Language	Word	Meaning
1	Latin	zōna	—
2	Ancient Greek	ζώνη	belt, sash

зо́на — Etymology, Origin & Word History | Etymology Explorer