1. A field, subject, or topic that someone is particularly interested in or concerned with
Her main area of interest is environmental science.
Sua principal área de interesse é a ciência ambiental.
2. A geographic region that has particular significance or importance for a specific purpose
The military established a restricted area of interest near the border.
O exército estabeleceu uma área de interesse restrita perto da fronteira.
3. In business or academics, a specialization or focus area
My area of interest within psychology is cognitive behavior.
Minha área de interesse na psicologia é o comportamento cognitivo.