perturbation


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Related to perturbation: Perturbation theory

per·tur·ba·tion

 (pûr′tər-bā′shən)
n.
1.
a. The act of perturbing.
b. The state of being perturbed; agitation.
2. A small change in a physical system, such as a variation in a planet's orbit resulting from the gravitational influence of other celestial bodies.

per′tur·ba′tion·al adj.

perturbation

(ˌpɜːtəˈbeɪʃən) or

perturbance

n
1. the act of perturbing or the state of being perturbed
2. a cause of disturbance or upset
3. (General Physics) physics a secondary influence on a system that modifies simple behaviour, such as the effect of the other electrons on one electron in an atom
4. (Astronomy) astronomy a small continuous deviation in the inclination and eccentricity of the orbit of a planet or comet, due to the attraction of neighbouring planets

per•tur•ba•tion

(ˌpɜr tərˈbeɪ ʃən)

n.
1. the act of perturbing.
2. the state of being perturbed.
3. deviation of a celestial body from a regular orbit about its primary, caused by the presence of one or more other bodies that act upon it.
[1325–75; Middle English perturbacioun (< Anglo-French) < Latin perturbātiō; see perturb, -tion]
per`tur•ba′tion•al, adj.

perturbation

One space body’s gravitational effect on another’s orbit.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.perturbation - an unhappy and worried mental stateperturbation - an unhappy and worried mental state; "there was too much anger and disturbance"; "she didn't realize the upset she caused me"
agitation - a mental state of extreme emotional disturbance
2.perturbation - (physics) a secondary influence on a system that causes it to deviate slightly
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
influence - the effect of one thing (or person) on another; "the influence of mechanical action"
variation - (astronomy) any perturbation of the mean motion or orbit of a planet or satellite (especially a perturbation of the earth's moon)
3.perturbation - activity that is a malfunction, intrusion, or interruptionperturbation - 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"
activity - any specific behavior; "they avoided all recreational activity"
bother, hassle, trouble, fuss - an angry disturbance; "he didn't want to make a fuss"; "they had labor trouble"; "a spot of bother"
magnetic storm - a sudden disturbance of the earth's magnetic field; caused by emission of particles from the sun
4.perturbation - a disposition that is confused or nervous and upsetperturbation - a disposition that is confused or nervous and upset
discomposure - a temperament that is perturbed and lacking in composure
5.perturbation - the act of causing disorder
disturbance - the act of disturbing something or someone; setting something in motion
breakdown, dislocation - the act of disrupting an established order so it fails to continue; "the social dislocations resulting from government policies"; "his warning came after the breakdown of talks in London"
surprisal, surprise - the act of surprising someone

perturbation

noun
A state of discomposure:
Informal: lather, stew.
Translations

perturbation

[ˌpɜːtɜːˈbeɪʃən] N
1. (= distress) → inquietud f, preocupación f
2. (= disturbance) (esp Phys, Astron) → perturbación f

perturbation

n (= state)Unruhe f; (= act)Beunruhigung f; to be in (a state of) perturbationziemlich in Unruhe sein

perturbation

n. perturbación.
sentimiento de inquietud;
variación anormal de un estado regular a otro.
References in classic literature ?
But there was everything, for our apprehension, in the lucky fact that no discomfortable legend, no perturbation of scullions, had ever, within anyone's memory attached to the kind old place.
Every time I ascended to the deck from my watches below, I instantly gazed aft to mark if any strange face were visible; for my first vague disquietude touching the unknown captain, now in the seclusion of the sea, became almost a perturbation.
Marianne's joy was almost a degree beyond happiness, so great was the perturbation of her spirits and her impatience to be gone.
Afraid, in her extreme perturbation, of the loneliness of the deserted rooms, and of half-imagined faces peeping from behind every open door in them, Miss Pross got a basin of cold water and began laving her eyes, which were swollen and red.
I confess that I felt a more than usual, indeed a quite irrational, perturbation of the blood, as, coming level with her, I dared to look into her face.
Whereof hee soon aware, Each perturbation smooth'd with outward calme, Artificer of fraud; and was the first That practisd falshood under saintly shew, Deep malice to conceale, couch't with revenge: Yet not anough had practisd to deceive URIEL once warnd; whose eye pursu'd him down The way he went, and on th' ASSYRIAN mount Saw him disfigur'd, more then could befall Spirit of happie sort: his gestures fierce He markd and mad demeanour, then alone, As he suppos'd, all unobserv'd, unseen.
The Saxon prisoners were accordingly removed, just as they introduced the monk Ambrose, who appeared to be in great perturbation.
He looked at me as if I were the devil and answered only in a few incoherent sentences, which showed, however--and that was the main thing-- the extent of the perturbation which O.
When Don Quixote heard this his amazement was redoubled and his perturbation grew greater than ever, for it suggested itself to his mind that Sancho must be dead, and that his soul was in torment down there; and carried away by this idea he exclaimed, "I conjure thee by everything that as a Catholic Christian I can conjure thee by, tell me who thou art; and if thou art a soul in torment, tell me what thou wouldst have me do for thee; for as my profession is to give aid and succour to those that need it in this world, it will also extend to aiding and succouring the distressed of the other, who cannot help themselves.
I was very curious to know what I had said or done to cause her so much perturbation a moment before and so I continued to importune her to enlighten me.
It was this last suggestion that caused her the greatest perturbation.
Before I left him I remembered what Jonathan put in his diary of the Professor's perturbation at reading something in an evening paper at the station at Exeter, so, seeing that Dr.