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Perturbation   /pˌərtərbˈeɪʃən/   Listen
Perturbation

noun
1.
An unhappy and worried mental state.  Synonyms: disturbance, upset.  "She didn't realize the upset she caused me"
2.
(physics) a secondary influence on a system that causes it to deviate slightly.
3.
Activity that is a malfunction, intrusion, or interruption.  Synonym: disturbance.  "He looked around for the source of the disturbance" , "There was a disturbance of neural function"
4.
A disposition that is confused or nervous and upset.  Synonym: fluster.
5.
The act of causing disorder.  Synonym: disruption.






WordNet 3.0 © 2010 Princeton University








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"Perturbation" Quotes from Famous Books



... surroundings or with any other company he would have wept bitterly. Even in the presence of Jimmy Powers his lower lip quivered; and his soul filled to the very throat with dismay. Jimmy Powers could not understand his very evident perturbation. If took a great deal of explanation on Bobby's part; but finally there was conveyed to the young riverman's understanding a slight notion of the situation. To the child the day seemed lost; but Jimmy Powers was more resourceful. ...
— The Adventures of Bobby Orde • Stewart Edward White

... court or little bay before mentioned. The temptation to enter was great, but I dared not; for the long, deep ocean-swell over which the skiff skimmed like a duck, not only without danger, but without the smallest perturbation, broke in and out here with such force that I knew the boat would instantly be swept out of my possession. The Parson, however, always reckless of peril in his enthusiasm, ...
— The Atlantic Monthly, Volume 15, No. 87, January, 1865 • Various

... to life expresseth so many and various affections of the mind? There shall the spectator see some insulting with joy, others fretting with melancholy, raging with anger, mad with love, boiling with avarice, undone with riot, tortured with expectation, consumed with fear; no perturbation in common life but the orator finds an example of it in the scene. And then for the elegancy of language, read but this inscription on the grave of a ...
— Discoveries and Some Poems • Ben Jonson

... and put it down. He had bought a copy of an early edition of the evening newspaper as he was stepping into his car, and now he was driving slowly through the park. He lit a cigar and gazed stolidly from the window. But his face showed no sign of mental perturbation. ...
— Jack O' Judgment • Edgar Wallace

... brought, Lilburn cut it off at about the length of two feet, and was showing his brother how the survivor might do, provided one of the guns should fail; (for they were determined upon going together;) but forgetting, perhaps, in the perturbation of the moment that the gun was cocked, when he touched trigger with the rod the gun fired, and he fell, and died in a few minutes—and was with George in the eternal world, where the slave is free from his master. But poor Isham was so terrified with this unexpected ...
— The Anti-Slavery Examiner, Omnibus • American Anti-Slavery Society


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