1. The main or most important concern, focus, or area of attention for a person or organization
His primary interest is in renewable energy research.
O seu interesse principal é na pesquisa de energias renováveis.
2. A financial or business stake in something that is of greatest importance or priority
The company's primary interest lies in expanding its market share.
O interesse principal da empresa está em expandir sua participação de mercado.
3. An individual's or group's main concern regarding personal welfare or benefit
Protecting the environment is her primary interest.
Proteger o meio ambiente é o seu interesse principal.