1. A layer situated within the interior of a structure, material, or organism; not on the surface or exterior
The internal layer of the skin is called the dermis.
A camada interna da pele é chamada de derme.
2. In computing and architecture, a middle or inner tier of a multi-layered system
The internal layer of the application handles data processing.
A camada interna da aplicação processa os dados.
3. In geology and material science, a stratum or bed situated below surface layers
The internal layer of rock contains mineral deposits.
A camada interna da rocha contém depósitos minerais.