'Perturb' definitions:

Definition of 'perturb'

From: WordNet
verb
Disturb in mind or make uneasy or cause to be worried or alarmed; "She was rather perturbed by the news that her father was seriously ill" [syn: perturb, unhinge, disquiet, trouble, cark, distract, disorder]
verb
Disturb or interfere with the usual path of an electron or atom; "The electrons were perturbed by the passing ion"
verb
Cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull; "The orbits of these stars were perturbed by the passings of a comet"
verb
Throw into great confusion or disorder; "Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt" [syn: perturb, derange, throw out of kilter]

Definition of 'Perturb'

From: GCIDE
  • Perturb \Per*turb"\, v. t. [L. perturbare, perturbatum; per + turbare to disturb, fr. turba a disorder: cf. OF. perturber. See Per-, and Turbid.]
  • 1. To disturb; to agitate; to vex; to trouble; to disquiet. [1913 Webster]
  • Ye that . . . perturb so my feast with crying. --Chaucer. [1913 Webster]
  • 2. To disorder; to confuse. [R.] --Sir T. Browne. [1913 Webster]