| subst. |
| 1. |
perturbation - a disposition that is confused or nervous and upset |
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fluster |
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discomposure a temperament that is perturbed and lacking in composure
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| 2. |
perturbation - (physics) a secondary influence on a system that causes it to deviate slightly |
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influence causing something without any direct or apparent effort
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natural philosophy,
physics the science of matter and energy and their interactions; "his favorite subject was physics"
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variation an activity that varies from a norm or standard; "any variation in his routine was immediately reported"
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| 3. |
perturbation - activity that is a malfunction, intrusion, or interruption; "the term `distress' connotes some degree of perturbation and emotional upset"; "he looked around for the source of the disturbance"; "there was a disturbance of neural function" |
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disturbance |
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activity any specific behavior; "they avoided all recreational activity"
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bother,
hassle,
fuss,
trouble disorderly fighting
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magnetic storm a sudden disturbance of the earth's magnetic field; caused by emission of particles from the sun
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