1. An area or region that is characterized by significant activity, movement, or engagement
The downtown area is the active zone of the city during weekends.
A área do centro é a zona ativa da cidade nos fins de semana.
2. In geology/seismology, a region with frequent seismic or volcanic activity
This region is located in an active zone prone to earthquakes.
Esta região está localizada em uma zona ativa propensa a terremotos.
3. In biology, the area of an organism or cell where metabolic activity is most intense
The active zone of the synapse is where neurotransmitters are released.
A zona ativa da sinapse é onde os neurotransmissores são liberados.