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perturb
Babylon English English dictionaryDownload this dictionary
perturb
v. worry, alarm, concern; perplex, bewilder; agitate, upset, excite, disturb

Wikipedia English The Free EncyclopediaDownload this dictionary
Perturbation
Perturbation or perturb may refer to any of numerous concepts in several fields:
  • Perturbation theory, mathematical methods that give approximate solutions to problems that cannot be solved exactly
  • Perturbation (geology), changes in the nature of alluvial deposits over time
  • Perturbation (astronomy), alterations to an object's orbit e.g. caused by gravitational interactions with other bodies
  • Perturbation theory (quantum mechanics), a set of approximation schemes directly related to mathematical perturbation for describing a complicated quantum system in terms of a simpler one
  • Perturbation (biology), an alteration of the function of a biological system, induced by external or internal mechanisms
  • Perturbation (transport), operation of a transport system outside of timetable such that delays in arrival and departure from defined locations are present.
  • Perturbation function, mathematical function which relates the primal and dual problems.

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WordNet 2.0 DictionaryDownload this dictionary
perturb
Verb
1. disturb in mind or make uneasy or cause to be worried or alarmed; "She was rather perturbed by the news that her father was seriously ill"
(synonym) unhinge, disquiet, trouble, cark, distract, disorder
(hypernym) disturb, upset, trouble
(hyponym) worry, vex
(derivation) disturbance, perturbation, upset
2. disturb or interfere with the usual path of an electron or atom; "The electrons were perturbed by the passing ion"
(hypernym) deviate
(derivation) perturbation
3. cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull; "The orbits of these stars were perturbed by the passings of a comet"
(hypernym) deviate
(derivation) perturbation
4. throw into great confusion or disorder; "Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt"
(synonym) derange, throw out of kilter
(hypernym) disorder, disarray
(derivation) perturbation, fluster


Babylon English-CzechDownload this dictionary
perturb
v. znepokojit; rozrušit

Babylon English-PolishDownload this dictionary
perturb
Czas. niepokoić; trwożyć

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