1. The formal public introduction or release of a product, service, event, or initiative by an organization or company
The official launch of the new smartphone was attended by thousands of customers.
O lançamento oficial do novo smartphone foi assistido por milhares de clientes.
2. A ceremonial or formal beginning of an operation, project, or program
The official launch of the space mission was scheduled for next month.
O lançamento oficial da missão espacial foi marcado para o próximo mês.