1. A basic, essential, or core truth or reality that serves as the foundation for understanding or reasoning about something
The fundamental fact is that climate change is real and requires immediate action.
O fato fundamental é que as mudanças climáticas são reais e exigem ação imediata.
2. A primary or elementary principle upon which other conclusions or theories are built
In physics, the fundamental fact of gravity shapes our understanding of the universe.
Na física, o fato fundamental da gravidade molda nossa compreensão do universo.