1. The quality of being tenacious; persistence and determination in pursuing something despite difficulty
She achieved her goals through sheer tenacity and hard work.
Ela alcançou seus objetivos através de pura tenacidade e trabalho duro.
2. The ability to hold firmly; adhesiveness or stickiness
The tenacity of the adhesive made it difficult to remove.
A tenacidade do adesivo o tornou difícil de remover.
3. In materials science, the ability of a material to resist breaking when stressed
Steel is valued for its tenacity and strength.
O aço é valorizado pela sua tenacidade e resistência.