1. logical thinking or argumentation that is based on solid evidence, facts, or valid premises
The judge's decision was based on founded reasoning supported by legal precedent.
A decisão do juiz foi baseada em raciocínio fundamentado apoiado por precedentes legais.
2. rational conclusions derived from well-established or substantiated grounds
Scientific theories require founded reasoning grounded in experimental data.
Teorias científicas requerem raciocínio fundamentado em dados experimentais.