1. The final, authoritative, or most complete form of a work, document, or product that is considered the standard or ultimate reference
The publisher released the definitive version of the novel with all the author's corrections.
A editora lançou a versão definitiva do romance com todas as correções do autor.
2. An edition or iteration that is considered complete and will not be significantly altered
This is the definitive version of the software after months of testing.
Esta é a versão definitiva do software após meses de testes.