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- DictionaryPer·tur·ba·tion/ˌpərdərˈbāSH(ə)n/
noun
- 1. anxiety; mental uneasiness: "she sensed her friend's perturbation"
- 2. a deviation of a system, moving object, or process from its regular or normal state or path, caused by an outside influence: "some minor perturbation in his house's cash flow"
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Definition of perturbation noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
5 days ago · 1. variable noun. A perturbation is a small change in the movement, quality, or behavior of something, especially an unusual change. [technical] ...perturbations in Jupiter's gravitational field. 2. uncountable noun. Perturbation is worry caused by some event.
In astronomy, perturbation is the complex motion of a massive body subjected to forces other than the gravitational attraction of a single other massive body. The other forces can include a third (fourth, fifth, etc.) body, resistance, as from an atmosphere, and the off-center attraction of an oblate or otherwise misshapen body.
perturbation. From Longman Dictionary of Contemporary English per‧tur‧ba‧tion /ˌpɜːtəˈbeɪʃən $ ˌpɜːrtər-/ noun 1 [ countable, uncountable] technical a small change in the movement, quality, or behaviour of something climatic perturbations 2 [ uncountable] formal worry about something that has happened or will happen Examples ...
perturbation, in mathematics, method for solving a problem by comparing it with a similar one for which the solution is known. Usually the solution found in this way is only approximate. Perturbation is used to find the roots of an algebraic equation that differs slightly from one for which the roots are known.
- The Editors of Encyclopaedia Britannica
perturbation /ˌpɜːtəˈbeɪʃən/ n. the act of perturbing or the state of being perturbed. a cause of disturbance or upset. a secondary influence on a system that modifies simple behaviour, such as the effect of the other electrons on one electron in an atom.
There are six meanings listed in OED's entry for the noun perturbation, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence. perturbation has developed meanings and uses in subjects including. astronomy (late 1700s) mathematics (1830s) particle physics (1830s)
