PERTURBATION • DICTIONARY ONE.COM • Definition of Perturbation

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/pˌərtərbˈeɪʃən/ Listen

Perturbation

noun

An unhappy and worried mental state. Synonyms: disturbance, upset. "She didn't realize the upset she caused me"

(physics) a secondary influence on a system that causes it to deviate slightly.

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"

A disposition that is confused or nervous and upset. Synonym: fluster.

The act of causing disorder. Synonym: disruption.

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Etymology of 'Perturbation'

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"Perturbation" Quotes from Famous Books

... slowly down to the kitchen and proceeded to wash the supper dishes. Matthew was smoking—a sure sign of perturbation of mind. He seldom smoked, for Marilla set her face against it as a filthy habit; but at certain times and seasons he felt driven to it and them Marilla winked at the practice, realizing that a mere man must have some vent ...

— Anne Of Green Gables • Lucy Maud Montgomery

... puffed away, blissfully unconscious of, or indifferent to, the close proximity of the velvet curtains. A thrifty housewife, could she have seen the smoke rise and curl and lose itself in the folds above, would have experienced the ecstasy of anxiety and perturbation. But there was no thrifty housewife at the Red Chateau, nothing but dreams of ...

— The Puppet Crown • Harold MacGrath

... comment followed this startling revelation. Arcot quieted them with an upraised hand. "The only reason you and the world at large haven't heard about this as yet is the fact that the perturbation of the planets is so very slight that the astronomers figured they might have made an error in calculation. They're rechecking now ...

— The Black Star Passes • John W Campbell

... deeply pervaded by that feeling.... To know the power of this Sacrament, give it to him whose doom is sealed, who in a few hours will be no more. The Bread and the Wine are his immense hope! they seem to stand between him and infinite danger, to soothe pain, to calm perturbation, and ...

— Sydney Smith • George W. E. Russell

... the accent upon the antepenult, as salvation, perturbation, concoction; words in atour or ator on the penult, ...

— A Grammar of the English Tongue • Samuel Johnson

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