1. A formal title of respect and honor used when addressing high-ranking officials, dignitaries, ambassadors, or other persons of importance
Your Excellency, we are honored by your presence at this ceremony.
Vossa Excelência, somos honrados com sua presença nesta cerimônia.
2. A mode of address that conveys supreme respect and deference to someone in a position of authority or high social standing
Your Excellency, the delegates are ready for the conference.
Vossa Excelência, os delegados estão prontos para a conferência.