1. A large-scale undertaking that covers a wide scope, requires significant resources, and involves substantial time commitment
The renovation of the old building was an extensive project that took two years to complete.
A renovação do prédio antigo foi um projeto extenso que levou dois anos para ser concluído.
2. An ambitious initiative involving comprehensive research, development, or implementation across multiple areas
The company launched an extensive project to modernize all of its facilities nationwide.
A empresa lançou um projeto extenso para modernizar todas as suas instalações em todo o país.