1. The most important or significant contribution made by a person, organization, or entity to a project, field, or cause
Her main contribution to the project was the innovative design.
A sua principal contribuição para o projeto foi o design inovador.
2. The primary or most notable aspect of someone's work or achievement
The main contribution of this research is the discovery of a new treatment.
A principal contribuição desta pesquisa é a descoberta de um novo tratamento.