This is the 12199th most frequent Portuguese word.
resíduo
"Resíduo" means "residue" or "waste."
The word 'resíduo' refers to waste or leftover materials in this context, specifically construction debris.
O resíduo da construção foi descartado corretamente.
The construction waste was disposed of properly.
Here, 'resíduo' is used to mean trace amounts or residues of a substance.
A análise identificou resíduos de tinta na superfície.
The analysis identified traces of paint on the surface.
In this instance, 'resíduo' metaphorically refers to remaining pieces or fragments of knowledge.