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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



... upon him, considering his neurotic temperament. He glanced at the sleeping man on the floor, let the lid down gently, and rolled over on his back. It was an unwonted calm that rested on his face. Not a muscle quivered. There was not the least sign of excitement or perturbation. He lay there a long while, thinking, and when he got up and began to move about, it was in a cool, collected manner, ...
— The God of His Fathers • Jack London

... the more pungent but comparatively salubrious perfume which a certain handsome little black-and-white quadruped—handsome, but impolite—is given to scattering upon the nocturnal breeze in moments of extreme perturbation. ...
— A Florida Sketch-Book • Bradford Torrey

... and Beranger mingled with the crowd, doing every thing in their power to appease and calm it. It was feared, every moment, that some pistol-shot would strike the duke from his horse. His countenance was pale and care-worn; but there was no visible perturbation. Having with difficulty forced his way through the angry crowd, Louis Philippe alighted from his horse and ascended the stairs. Lafayette, who was already in heart in sympathy with the Orleanist movement, came ...
— Louis Philippe - Makers of History Series • John S. C. (John Stevens Cabot) Abbott

... death would be better far than the continued disdain of the Princess Osra. And all this, being told by the marquis's servants to the princess's waiting-women, reached Osra's ears, and caused her much perturbation. For she now perceived that the passion, of the marquis was real and deep, and she became very sorry for him; and the longer the face of the rascally physician grew, the more sad the princess became; and she walked up and down, bewailing the terrible effects of her beauty, wishing that ...
— McClure's Magazine, January, 1896, Vol. VI. No. 2 • Various

... in at the gate of the Elms, and Geoff saw the high red brick house, surrounded with its walls, like a prison, or like the ogre's castle itself, his perturbation grew to a climax. The vague alarm which takes complete possession of a child when once aroused in him rose higher and higher in his mind. When the lady sprang lightly down, and held out her arms to receive him as he alighted, the little fellow made ...
— A Country Gentleman and his Family • Mrs. (Margaret) Oliphant


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