perturbation

[ pur-ter-bey-shuhn ]

/ ˌpɜr tərˈbeɪ ʃən /

SEE SYNONYMS FOR perturbation ON THESAURUS.COM

noun

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

1325–75; <Latin perturbātiōn- (stem of perturbātiō;see perturb, -ation); replacing Middle English perturbacioun<Anglo-French <Latin, as above

OTHER WORDS FROM perturbation

per·tur·ba·tion·al, adjective

Words nearby perturbation

pertinacious, pertinacity, pertinent, per tubam, perturb, perturbation, perturbation theory, perturbative, pertussis, pertussis immune globulin, pertussis vaccine

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for perturbation

Say your portfolio is worth a third less than before this recession or crash or perturbation or whatever you want to call it.
So, When Do We Become a Third World Nation?|James Atlas|December 2, 2008|DAILY BEAST
His volubility increased with his perturbation, and then he drank excessively and sang Dixie.
A Rebel War Clerk's Diary at the Confederate States Capital|John Beauchamp Jones
Nor was my perturbation decreased by the reëntrance of the lookout some half hour after he had gone out.
More Tish|Mary Roberts Rinehart
It was almost impossible to read or work with her mind in such a state of perturbation.
The Secret of the Storm Country|Grace Miller White

You may easily conceive my astonishment and perturbation when I was told that the emperor desired to speak with me immediately.
Frederic Shoberl Narrative of the Most Remarkable Events Which Occurred In and Near Leipzig|Frederic Shoberl (1775-1853)
For a moment Guillaume appeared to notice the other's perturbation, by the embarrassed answers which he obtained from him.
The Three Cities Trilogy, Complete|Emile Zola

British Dictionary definitions for perturbation

perturbation

/ (ˌpɜːtəˈbeɪʃən) /

noun

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

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.

单词	perturbation
释义	perturbation [ pur-ter-bey-shuhn ] / ˌpɜr tərˈbeɪ ʃən / SEE SYNONYMS FOR perturbation ON THESAURUS.COM noun 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 1325–75; <Latin perturbātiōn- (stem of perturbātiō;see perturb, -ation); replacing Middle English perturbacioun<Anglo-French <Latin, as above OTHER WORDS FROM perturbation per·tur·ba·tion·al, adjective Words nearby perturbation pertinacious, pertinacity, pertinent, per tubam, perturb, perturbation, perturbation theory, perturbative, pertussis, pertussis immune globulin, pertussis vaccine Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for perturbation Say your portfolio is worth a third less than before this recession or crash or perturbation or whatever you want to call it. So, When Do We Become a Third World Nation?\|James Atlas\|December 2, 2008\|DAILY BEAST His volubility increased with his perturbation, and then he drank excessively and sang Dixie. A Rebel War Clerk's Diary at the Confederate States Capital\|John Beauchamp Jones Nor was my perturbation decreased by the reëntrance of the lookout some half hour after he had gone out. More Tish\|Mary Roberts Rinehart It was almost impossible to read or work with her mind in such a state of perturbation. The Secret of the Storm Country\|Grace Miller White You may easily conceive my astonishment and perturbation when I was told that the emperor desired to speak with me immediately. Frederic Shoberl Narrative of the Most Remarkable Events Which Occurred In and Near Leipzig\|Frederic Shoberl (1775-1853) For a moment Guillaume appeared to notice the other's perturbation, by the embarrassed answers which he obtained from him. The Three Cities Trilogy, Complete\|Emile Zola British Dictionary definitions for perturbation perturbation / (ˌpɜːtəˈbeɪʃən) / noun 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 Words related to perturbation anxiety, confusion, commotion, disruption, disturbance, disorder Scientific definitions for perturbation 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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perturbation

noun

Origin of perturbation

OTHER WORDS FROM perturbation

Words nearby perturbation

Example sentences from the Web for perturbation

British Dictionary definitions for perturbation

noun

Words related to perturbation

Scientific definitions for perturbation