From Middle High German thrōn, trōn, from Old French tron, from Latin thronus, from Ancient Greek θρόνος (thrónos, “seat, place of honour”).
Thron m (genitive Throns or Thrones, plural Throne)
- (figuratively) the monarchy
This and other words of Greek origin were unaffected by the spelling reform that changed the "th" in e.g. Thier to "t" (Tier).