1. A formal speech, typically delivered on a ceremonial occasion
The president delivered an oration at the memorial service.
O presidente proferiu uma oração no serviço memorial.
2. Eloquent or rhetorical speech; the art of public speaking
His oration skills impressed the entire audience.
Suas habilidades de oração impressionaram toda a plateia.
3. A musical composition for solo voices, chorus, and orchestra on a religious or serious theme
Handel's 'Messiah' is one of the most famous oratorios.
O 'Messias' de Handel é um dos oratórios mais famosos.