perturbation
the act of perturbing.
the state of being perturbed.
mental disquiet, disturbance, or agitation.
a cause of mental disquiet, disturbance, or agitation.
Astronomy. 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 the celestial body.
Origin of perturbation
1Other words from perturbation
- per·tur·ba·tion·al, adjective
Words Nearby perturbation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use perturbation in a sentence
These perturbations make the stars’ orbits around the galactic center more and more elliptical.
Here’s how cool a star can be and still achieve lasting success | Ken Croswell | August 23, 2021 | Science NewsAs the core wobbles, it creates gravitational perturbations that affect the surrounding rings, creating subtle “waves” that can be measured.
Called LowKey, the tool expands on Fawkes by applying perturbations to images based on a stronger kind of adversarial attack, which also fools pretrained commercial models.
How to stop AI from recognizing your face in selfies | Will Douglas Heaven | May 5, 2021 | MIT Technology ReviewConfronted with any perturbations, the model should be able to correct itself as well.
Geoffrey Hinton has a hunch about what’s next for AI | Siobhan Roberts | April 16, 2021 | MIT Technology ReviewThe fish used its swordlike snouts to sense electrical perturbations made by smaller prey.
Can people protect as much space as nature needs? | Jonathan Lambert | January 21, 2021 | Science News For Students
He turned his thesis into the book Geometric perturbation Theory in Physics on the new developments in differential geometry.
This is What Happens When You Teach Machines the Power of Natural Selection | James Barrat | February 1, 2014 | THE DAILY BEASTSay your portfolio is worth a third less than before this recession or crash or perturbation or whatever you want to call it.
At times there are periodic attacks of mental perturbation that may become true insanity.
Essays In Pastoral Medicine | Austin MalleyShe picked up her parasol, and resumed her journey in some perturbation of mind, reflecting on the utter rudeness of the deer.
Blazed Trail Stories | Stewart Edward WhiteI had an idea that she would shrink from me or show some perturbation; but I was never more mistaken in my life.
A Little Union Scout | Joel Chandler HarrisAgatha went up to her mistress in a state of great perturbation, and the cook also hurried away to her bedroom.
The Children of the New Forest | Captain MarryatThe frown of bewilderment was deeper now––the perturbation turned anxious.
The Cruise of the Shining Light | Norman Duncan
British Dictionary definitions for perturbation
/ (ˌpɜːtəˈbeɪʃən) /
the act of perturbing or the state of being perturbed
a cause of disturbance or upset
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
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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for perturbation
[ pûr′tər-bā′shən ]
A small change in a physical system, most often in a physical system at equilibrium that is disturbed from the outside.
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 cause perturbations and cause a planet to deviate from its expected orbit. Perturbations in Neptune's orbit led to the discovery of the object-Pluto-that was causing the perturbation. Perturbations in the orbits of stars have led to the discovery of planetary systems outside of our Solar system.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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