1. An area that has been restricted and protected to ensure safety and prevent unauthorized access
Only authorized personnel are allowed in the secure zone.
Apenas pessoal autorizado é permitido na zona segura.
2. A designated area in a facility protected by security measures such as barriers, surveillance, or guards
The airport's secure zone requires passengers to pass through security checkpoints.
A zona segura do aeroporto exige que os passageiros passem por pontos de controle de segurança.
3. In military or law enforcement contexts, an area that has been cleared of threats and secured
The military established a secure zone in the conflict area for civilians.
O exército estabeleceu uma zona segura na área de conflito para civis.