1. The rear or back part of something; the division or area located toward the back
The posterior section of the building houses the storage facilities.
A seção posterior do edifício abriga as instalações de armazenamento.
2. In anatomy, the back part of a body structure or organ
The surgeon examined the posterior section of the knee joint.
O cirurgião examinou a seção posterior da articulação do joelho.
3. In organizational contexts, the rear division or department
The posterior section of the aircraft contains the cargo hold.
A seção posterior da aeronave contém o compartimento de carga.