1. An economic or industrial sector that is restricted, regulated, or inaccessible to free market competition or foreign investment
The telecommunications industry remains a closed sector in many developing countries.
A indústria de telecomunicações permanece um setor fechado em muitos países em desenvolvimento.
2. A restricted area or compartment that is not open to the public or general access
Access to the VIP lounge is a closed sector reserved for members only.
O acesso ao salão VIP é um setor fechado reservado apenas para membros.