Look up: perturbation

1. 
   Perturbation
   A slight nudge.
   Found on http://mitpress.mit.edu/books/FLAOH/cbnh
   
   
2. 
   Perturbation
   Any change to any ecosystem.
   Found on http://www.pestmanagement.co.uk/lib/glos
   
   
3. 
   Perturbation
   See Orbital Perturbation.
   Found on http://www.ordnancesurvey.co.uk/oswebsit
   
   
4. 
   perturbation
   [n] - (physics) a secondary influence on a system that causes it to deviate slightly 2. [n] - activity that is an intrusion or interruption 3. [n] - a disposition that is confused or nervous and upset
   Found on http://www.webdictionary.co.uk/definitio
   
   
5. 
   Perturbation
   Definition (keystage 3) A small disturbance to a system.
   Found on http://thesaurus.maths.org/mmkb/entry.ht
   
   
6. 
   Perturbation
   Per`tur·ba'tion noun [ Latin perturbatio : confer French perturbation .] 1. The act of perturbing, or the state of being perturbed; esp., agitation of mind. 2. (Astron.) A disturbance in the regular elliptic or other motion of a heavenly body, produced by some force additional to that which causes its regular motion; as, the perturbations of the planets ar ...
   Found on http://www.encyclo.co.uk/webster/P/63
   
   
7. 
   perturbation
   1. The act of perturbing, or the state of being perturbed; especially, agitation of mind. ... 2. <astronomy> A disturbance in the regular elliptic or other motion of a heavenly body, produced by some force additional to that which causes its regular motion; as, the perturbations of the planets are caused by their attraction on each other. ... O ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
8. 
   perturbation
   fluster noun a disposition that is confused or nervous and upset
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
9. 
   perturbation
   disturbance noun activity that is an intrusion or interruption; `he looked around for the source of the disturbance`; `there was a disturbance of neural function`
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
10. 
    perturbation
    noun (physics) a secondary influence on a system that causes it to deviate slightly
    Found on http://wordnet.princeton.edu/perl/webwn?
    
    
11. 
    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 caused by gravitational interactions with other bodies * Perturbation theory (quantum mechanics), a set of...
    Found on http://en.wikipedia.org/wiki/Perturbatio
    
    
12. 
    Perturbation
    • (n.) A disturbance in the regular elliptic or other motion of a heavenly body, produced by some force additional to that which causes its regular motion; as, the perturbations of the planets are caused by their attraction on each other. • (n.) The act of perturbing, or the state of being perturbed; esp., agitation of mind.Perturbation: ...
    Found on http://thinkexist.com/dictionary/meaning
    
    
13. 
    perturbation
    in astronomy, deviation in the motion of a celestial object caused either by the gravitational force of a passing object or by a collision with it. ... [7 related articles]
    Found on http://www.britannica.com/eb/a-z/p/48
    
    
14. 
    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 ... [1 related articles]
    Found on http://www.britannica.com/eb/a-z/p/48
    
    
15. 
    perturbation
    perturbation 1. A small change in a physical system, most often in a physical system at equilibrium that is disturbed from the outside. 2. A cause of mental disquiet, disturbance, or agitation. 3. Variation in a designated orbit, as of a planet, that results from the influence of one or more external bodies. Gravitational attraction between planets can caus...
    Found on http://www.wordinfo.info/words/index/inf
    
    
16. 
    Perturbation
    An imprecise term that means changing some parameter value (or function) and seeing what effect this has on the solution. This embodies continuity and differentiability properties of the optimal responses: objective value, policy set, and perhaps dual values too. This is what is sometimes called marginal analysis of solutions, and changes are limi...
    Found on http://glossary.computing.society.inform
    
    
17. 
    perturbation
    
    1. an unhappy and worried mental state
    2. activity that is an intrusion or interruption
    3. a disposition that is confused or nervous and upset
    4. the act of causing disorder
    
    Found on
    
    
18. 
    perturbation
    In general, a slight nudge that, temporarily or permanently, displaces an object or system out of equilibrium. In astronomy, a change in the orbit of a body, usually as a result of the gravitational effect of another, typically much larger, body. The planets mutually perturb one another; the orbit...
    Found on http://www.daviddarling.info/encyclopedi
    
    
19. 
    perturbation
    perturbation (pŭr"turbā'shun) , in astronomy and physics, small force or other influence that modifies the otherwise simple motion of some object. The term is also used for the effect produced by the perturbation, e.g., a change in the object's energy or path of motion. One impor...
    Found on http://www.infoplease.com/ce6/sci/A08385