1. A thing that is accepted as true or as certain to happen, without proof
The project was based on the assumption that funding would be available.
O projeto foi baseado na assunção de que haveria financiamento disponível.
2. The action or fact of assuming power or responsibility
The assumption of office by the new president was celebrated nationwide.
A assunção do cargo pelo novo presidente foi celebrada em todo o país.
3. In Christian theology, the bodily taking up of the Virgin Mary into heaven
The Assumption of Mary is celebrated on August 15th.
A Assunção de Maria é celebrada em 15 de agosto.