1. The quality or state of being impenetrable; the inability to be pierced, passed through, or entered
The impenetrability of the fortress walls made it impossible for enemies to breach the defense.
A impenstrabilidade das muralhas da fortaleza tornava impossível os inimigos romperem a defesa.
2. In physics or materials science, the property of a substance that resists penetration by another substance or object
The impenetrability of diamond makes it one of the hardest known materials.
A impenstrabilidade do diamante o torna um dos materiais mais duros conhecidos.
3. Figuratively, the quality of being difficult or impossible to understand or comprehend
The impenetrability of his arguments left the audience confused.
A impenstrabilidade de seus argumentos deixou a audiência confusa.