1. An area or region that has not been officially documented, mapped, or catalogued in records, databases, or official registries
The explorers discovered unrecorded zones in the remote rainforest that were not on any official map.
Os exploradores descobriram zonas não registradas na floresta tropical remota que não estavam em nenhum mapa oficial.
2. A geographical or administrative area lacking formal documentation or official recognition
Several unrecorded zones in the city's outskirts lack proper infrastructure planning.
Várias zonas não registradas na periferia da cidade carecem de planejamento adequado de infraestrutura.