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WordReference Random House Learner's Dictionary of American English © 2024per•turb /pɚˈtɜrb/USA pronunciation v. [~ + object]- to disturb (someone) greatly in the mind:The disappointments he faced perturbed him greatly.
- Astronomyto cause the orbit of (a celestial body) to be changed or upset.
per•tur•ba•tion /ˌpɜrtɚˈbeɪʃən/USA pronunciation n. [uncountable]the effects of perturbation on heavenly bodies.[countable]The perturbations were felt throughout the solar system.See -turb-. WordReference Random House Unabridged Dictionary of American English © 2024per•turb (pər tûrb′),USA pronunciation v.t. - to disturb or disquiet greatly in mind; agitate.
- Psychiatryto throw into great disorder;
derange. - Astronomyto cause perturbation in the orbit of (a celestial body).
- Latin perturbāre to throw into confusion, equivalent. to per- per- + turbāre to disturb; see turbid
- Old French perturber)
- Middle English perturben (1325–75
- 1.See corresponding entry in Unabridged trouble.
- 2.See corresponding entry in Unabridged confuse, addle, muddle.
- 1.See corresponding entry in Unabridged pacify.
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