Meaning of PERTURBATION in English

PERTURBATION

noun Date: 14th century the action of perturbing ; the state of being perturbed, a disturbance of motion, course, arrangement, or state of equilibrium, ~al adjective

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.