1. A system or process that is not transparent, difficult to understand, or lacks clarity in its operations and decision-making
The government's budget allocation process is considered an opaque system by many critics.
O processo de alocação orçamentária do governo é considerado um sistema opaco por muitos críticos.
2. In technology and software, a system whose internal workings or source code are not visible or accessible to users
The algorithm uses an opaque system that prevents users from understanding how decisions are made.
O algoritmo utiliza um sistema opaco que impede os usuários de entender como as decisões são tomadas.