1. A formal discussion or argument about a topic of public interest, typically involving multiple speakers presenting different viewpoints before an audience
The presidential candidates participated in a public debate on healthcare policy.
Os candidatos presidenciais participaram de um debate público sobre política de saúde.
2. An open discussion or controversy in society regarding a matter of general concern
There has been a heated public debate about climate change for years.
Há anos existe um intenso debate público sobre as mudanças climáticas.