Definition of perturbation
2 : a disturbance of motion, course, arrangement, or state of equilibrium; especially : a disturbance of the regular and usually elliptical course of motion of a celestial body that is produced by some force additional to that which causes its regular motion
perturbationalplay \ˌpər-tər-ˈbā-shnəl, -shə-nəl, ˌpər-ˌtər-\ adjective
Examples of perturbation in a Sentence
a perturbation in the planet's orbit
in her perturbation she kept calling her son, a freshman, to see if everything was all right at college
Recent Examples of perturbation from the Web
That’s obviously impossible for humans to perceive, but LIGO’s detectors are so sensitive that even such tiny perturbations can’t escape their laser eyes.
This frequency is: Here ν is the frequency of the perturbation and h is a constant (the Planck constant).
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'perturbation'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of perturbation
PERTURBATION Defined for English Language Learners
Definition of perturbation for English Language Learners
: a change in the normal state or regular movement of something
: the state of being worried or upset
Seen and Heard
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