• Webster's Revised Unabridged Dictionary
    • n Perturbance Disturbance; perturbation. "Perturbance of the mind."
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Century Dictionary and Cyclopedia
    • n perturbance Perturbation; disturbance.
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Chambers's Twentieth Century Dictionary
    • ns Perturbance act of perturbing or state of being perturbed: disquiet of mind: irregular action, esp. (astron.) the disturbance produced in the simple elliptic motion of one heavenly body about another by the action of a third body, or by the non-sphericity of the principal body
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Chambers's Twentieth Century Dictionary
Fr.,—L. perturbāre, -ātumper, thoroughly, turbāre, to disturb—turba, a crowd.


In literature:

Mrs. Lessways was perturbed and somewhat apprehensive also; but she was flattered and pleased.
"Hilda Lessways" by Arnold Bennett
His perturbation attracted the attention of his hostess, and, looking round for the cause, she was just in time to see Ann disappearing into the larder with a cream jug.
"At Sunwich Port, Complete" by W.W. Jacobs
Mr. Woods was in an unenviable state of perturbation.
"The Eagle's Shadow" by James Branch Cabell
He traversed the room with perturbed steps, and even foamed with anguish and fury.
"Caleb Williams" by William Godwin
Master Hymn-of-Praise Busy was excessively perturbed.
"The Nest of the Sparrowhawk" by Baroness Orczy
His face was perturbed and uneasy.
"The Moon Rock" by Arthur J. Rees
Vanslyperken threw them down on the table with every sign of perturbation, and remained silent and pale.
"Snarleyyow" by Captain Frederick Marryat
He should have appeared ashamed, downcast, humanly perturbed; and he didn't in the least.
"The Purple Heights" by Marie Conway Oemler
He was still very perturbed, but differently perturbed.
"The Roll-Call" by Arnold Bennett
Had he suspected, however, the trend her thoughts were taking, he would have been greatly perturbed.
"Kindred of the Dust" by Peter B. Kyne

In poetry:

I will not perturbate
Thy Paradisal state
With praise
Of thy dead days;
"To The Dead Cardinal Of Westminster" by Francis Thompson
How I am pleased with thee, sweet girl! But do
Shake off this perturbation, be not anxious,
Be not alarmed, I want to hear thee talk -
Be cheerful.
"Nathan The Wise - Act V" by Gotthold Ephraim Lessing
All summer cannot quicken it with heat,
Nor Spring perturb it with a budding bough,
Nor all the glittering devils of the sleet
In snowing Winter rack its quiet now.
"The Golden Corpse" by Stephen Vincent Benet
CLARIN. What wonder?
When a thousand times have I
Scraped the earth as if for nuggets,
When a thousand times the wind
By my screeching was perturbed,
And yet Livia was oblivious.
"The Wonder-Working Magician - Act III" by Denis Florence MacCarthy
That glowing hair on shoulders white
Is pride past sum: take care, take care!
Even to dream of wish'd delight
Too much perturbs the ebb of night--
Bind up, bind up your burning hair!
"Take Care, Take Care" by John Freeman
When this was told to CAPTAIN TODD,
At first he thought it rather odd,
And felt some perturbation;
But very long he did not grieve,
He thought he could a way perceive
To SUCH a situation!
"The Sensation Captain" by William Schwenck Gilbert

In news:

Researchers Provide Systems-Level Dissection of Regulatory Perturbations in Cancer.
A worried-looking Demi Moore looks perturbed in between takes on the set.
At one heated point in Monday night's South Carolina Democratic debate, a perturbed Barack Obama finally blurted out to Hillary Clinton what millions of others have been thinking these past weeks.
And an internationally acknowledged expert on the applied- mathematics technique known as perturbation, died April 17 at Albany Medical Center Hospital.
Poet perturbed by MLK paraphrase.
Perturbations to their structures caused by mysterious rocketing objects.
Those perturbations tip the researchers that a sunspot is forming.
Those perturbations are what tip the researchers that a sunspot is forming.
Our company recently implemented a policy that has quite a few people perturbed, myself included.
Mention nurses in the Bay Area these days and two images come to mind: a caring, nurturing professional at a patient's bedside, and a perturbed, bullhorn carrying protester walking a picket line.
I was both pleased and perturbed by the "On the Runway" story in the Sunday New York Times Style section on January 30th.
Preseason or not, there's nothing easier to predict than Rick Carlisle being perturbed after a poor defensive performance.
NBA Playoff primer, plus a pick that might perturb you.
Baseball Stadiums' Peanut -Free Seating Perturbs Some Fans.
Councilmember Daniel Dromm says he is perturbed by the pigeon poop problem casting a shadow over the 74th Street station on Roosevelt Avenue, which hosts the No.

In science:

Its kinematics is classified as perturbed: the velocity field shows rotation but the σ-map is very perturbed.
3D spectroscopy with VLT/GIRAFFE - II: Are Luminous Compact Galaxies merger remnants ?
We perform a complete classification of the perturbations as well as the stability analysis for all the relevant physical perturbations.
Stability of general relativistic static thick disks: the isotropic Schwarzschild thick disk
We mean by a physical perturbation the fact that a perturbation in a given direction of the pressure must create a perturbation in the same direction of the four velocity.
Stability of general relativistic static thick disks: the isotropic Schwarzschild thick disk
In this section we classified the possible perturbed quantities combinations that leads to a selfconsistent set of the perturbed conservation equations of motion.
Stability of general relativistic static thick disks: the isotropic Schwarzschild thick disk
For that reason we search for perturbations in which the velocity perturbation in a certain direction leads to a pressure perturbation in the same direction.
Stability of general relativistic static thick disks: the isotropic Schwarzschild thick disk