What is the meaning of Perturb?

1. To cause (something) to be physically disordered or disturbed; to cause confusion.

   To cause (something) to be physically disordered or disturbed; to cause confusion.

   To disturb (someone, their mind, etc.) mentally; to bother, trouble, upset.

   Of a celestial body: to modify the motion or orbit of (another celestial body) by exerting a gravitational force; hence , to slightly modify (the motion of an object).

   To slightly modify (a set of equations or their solutions), producing deviations from a simple, easily solvable problem, in order to find an approximate solution to a problem that is more difficult to solve or otherwise unsolvable.

   To influence (a process or system) so that it deviates from its normal state.

   To bother, to disturb, to trouble.

   first-person singular present indicative/subjunctive of perturba

   Source: wiktionary.org