1. An area or zone characterized by lack of stability, equilibrium, or predictability; prone to sudden changes, disturbances, or collapse
The seismic activity made that region unstable for construction projects.
A atividade sísmica tornou essa região instável para projetos de construção.
2. In scientific contexts, an area where conditions are not in equilibrium and tend to change or fluctuate
The atmosphere over the equator forms an unstable region during certain seasons.
A atmosfera sobre o equador forma uma região instável durante certas estações.
3. A geographic area experiencing political, social, or economic turbulence
The conflict has turned the region into an unstable region for investors.
O conflito transformou a região em uma zona instável para investidores.