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Perturbation

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Definitions of Perturbation
Pronunciation : Per`tur*ba"tion
Part of Speech : n.
Etymology : [L. perturbatio: cf. F. perturbation.]
Definition : 1. The act of perturbing, or the state of being perturbed; esp., agitation of mind.

2. (Astron.)

Defn: A disturbance in the regular elliptic or other motion of a heavenly body, produced by some force additional to that which causes its regular motion; as, the perturbations of the planets are caused by their attraction on each other. Newcomb.
Source : Webster's Unabridged Dictionary, 1913

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