1. The quality or state of being easily disturbed, agitated, or thrown off balance mentally or emotionally
The perturbability of the student was evident when she became anxious before exams.
A perturbabilidade da estudante era evidente quando ela ficava ansiosa antes dos exames.
2. In physics or mathematics, the capacity of a system to be affected by perturbations or small disturbances
The perturbability of the equilibrium system was tested through various external forces.
A perturbabilidade do sistema em equilíbrio foi testada através de várias forças externas.