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perturbation

perturbation

4 8.8
A small change that makes a system behave differently
  • noun
  • /ˌpɜr.tɜrˈbeɪ.ʃən/
  • Specialized
translation icon : perturbación
  • After the seismic perturbation, researchers studied how it impacted the local geological formations.
  • wavefront perturbations
  • perturbation parameters
  • planetary perturbations

When the perturbation, the first order perturbation, splits all the levels.

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Examples

  • The vestibulo-ocular reflex stabilizes gaze during target fixation and unsuspected perturbation of head and body position.

    Academic text (1999)
  • Cloud feedback can also significantly increase or decrease the initial perturbation of this system.

    Academic text (1994)
  • Furthermore, a given activity may cause perturbations that have unintended, indirect effects on other system elements.

    Academic text (1992)
  • So this is a disease that's exquisitely sensitive to environmental perturbations and in this case a normal climate cycle.

  • Third, small local populations are vulnerable to local perturbations such as fires, storms, and outbreaks of disease.

    Academic text (1995)
  • Although penguins show adaptations to environmental variability, environmental perturbations take a toll on their populations.

    Academic text (2008)
  • It became completely clear that Pluto did not have the chops to be responsible for the perturbations on Uranus and Neptune.

  • The scientists observed unusual perturbations in the temperature that affected the experiment's outcome.

  • These perturbations in the ecosystem can lead to significant changes in the behavior of local wildlife.

Synonyms

disruption
vsperturbation
126 4.1

A break in the normal flow of activity

covers broader changes that alter system behaviour, not only breaks
disturbance
vsperturbation
  • Specialized
80 4.1

An interruption to a normal system, like loud noise or signal trouble

focuses on changes that make a system behave differently
fluctuation
vsperturbation
76 6.3

A change in level or amount that goes up and down over time

refers to changes that cause different system actions rather than mere level shifts
variation
vsperturbation
  • Specialized
1 9.0

A small change in a planet or moon's orbit caused by other bodies

is a general term for changes in any system or process
perturbance
vsperturbation
  • Specialized
8.5

A change that makes a system or process work differently than usual

has identical meaning but is an uncommon variant spelling

Antonyms

363 3.1

Being steady and not likely to change

36 4.1

The usual state when life returns to the expected routine

How Disruptive

upheaval
51 6.9
disruption
126 4.1
perturbation
  • Specialized
4 8.8
disturbance
  • Specialized
80 4.1
variation
113 3.0

Surface Forms

perturbation singular
perturbations plural

Morphology

perturbation = perturb (transparent) = perturb + ation

The noun is a regular -ation derivation from the verb 'perturb' meaning 'the act or result of disturbing', which is directly accessible to learners who know the verb.

Etymology

Perturbation comes from Latin parts per- ('completely') and turbare ('to disturb'), and it shares the same root as the word turbulent. So a perturbation is a change that disturbs a system and makes it act differently than normal.