1. A residential area that develops outside formal urban planning and zoning regulations, typically characterized by improvised housing structures and lack of basic services
The city's rapid growth led to the expansion of informal settlements on the outskirts.
O rápido crescimento da cidade levou à expansão de assentamentos informais nas periferias.
2. A community of dwellings built without legal permission or formal government planning
Many families in informal settlements lack access to clean water and electricity.
Muitas famílias em assentamentos informais não têm acesso a água potável e eletricidade.