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
However, British astronomer Jean Meeus suggests in his book, More Mathematical Astronomy Morsels, that perturbations in the orbits of the moon and the Earth will result in periods of on-and-off total solar eclipses starting in 620 million years.
Whether the perturbation is in the inner ear itself or the brain, the end result seems to be the same: a feeling of having defied physics and left one’s body.
The perturbations resulting from gravitational interaction between planet and star are what have enabled astronomers to find planets outside our solar system.
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.
Soon that perturbation finds a sudden and disturbing practical correlate.
The perturbations in the magnetic field were similar to what astronomers have observed around objects with thin atmospheres.
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
Synonymsagita, agitation, anxiousness, apprehension, apprehensiveness, care, concern, concernment, disquiet, disquietude, fear, nervosity, nervousness, anxiety, solicitude, sweat, unease, uneasiness, worry
Related Wordsstrain, stress, tension; alarm (also alarum), anguish, consternation, desperateness, desperation, discomfort, discomposure, dismay, distraction, distress, disturbance, edginess, franticness, hand-wringing, jitters, jumpiness, panic, tremor; angst, fearfulness, torment, upset, vexation; cold feet, doubt, dread, foreboding, incertitude, misgiving, presentiment, suspense, uncertainty; compunction, qualm, scruple
Near Antonymscalm, calmness, content, contentment, ease, easiness, peace, peacefulness, placidity, placidness, quiet, quietude, sereneness, serenity, tranquillity (or tranquility), tranquilness; comfort, consolation, relief, solace
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
What made you want to look up perturbation? Please tell us where you read or heard it (including the quote, if possible).