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Definitions of perturb
  1. verb
    throw into great confusion or disorder
    "Fundamentalists threaten to perturb the social order"
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  2. verb
    disturb in mind or make uneasy or cause to be worried or alarmed
    "She was rather perturbed by the news that her father was seriously ill"
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  3. verb
    cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull
    "The orbits of these stars were perturbed by the passings of a comet"
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  4. verb
    disturb or interfere with the usual path of an electron or atom
    "The electrons were perturbed by the passing ion"
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Definition that contains perturb
  • allen United States comedienne remembered as the confused but imperturbable partner of her husband, George Burns (1906-1964)
  • gracie United States comedienne remembered as the confused but imperturbable partner of her husband, George Burns (1906-1964)
  • elves an acronym for emissions of light and very low frequency perturbations due to electromagnetic pulse sources; extremely bright extremely short (less than a msec) electrical flashes forming a huge ring (up to 400 km diameter) in the ionosphere
  • variation (astronomy) any perturbation of the mean motion or orbit of a planet or satellite (especially a perturbation of the earth's moon)
  • unflappable not easily perturbed or excited or upset; marked by extreme calm and composure
  • oort cloud (astronomy) a hypothetical huge collection of comets orbiting the sun far beyond the orbit of Pluto; perturbations (as by other stars) can upset a comet's orbit and may send it tumbling toward the sun
  • grace ethel cecile rosalie allen United States comedienne remembered as the confused but imperturbable partner of her husband, George Burns (1906-1964)
  • imperturbable not easily perturbed or excited or upset; marked by extreme calm and composure
  • gracie allen United States comedienne remembered as the confused but imperturbable partner of her husband, George Burns (1906-1964)
  • discomposure a temperament that is perturbed and lacking in composure
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