1. A predetermined or established subject that remains constant and does not change during a discussion, presentation, or meeting
The fixed topic for today's conference is renewable energy solutions.
O tópico fixo da conferência de hoje é soluções de energia renovável.
2. In linguistics or communication, a subject that has been established beforehand and serves as the focus of conversation
We need to stick to the fixed topic to ensure productive discussions.
Precisamos nos ater ao tópico fixo para garantir discussões produtivas.