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perturbation |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Perturbation \Per`tur*ba"tion\, n. [L. perturbatio: cf F. perturbation.] 1. The act of perturbing, or the state of being perturbed; esp., agitation of mind. 2. (Astron.) 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. From WordNet r 1.6 [wn]: perturbation n 1: an unhappy and worried mental state; "there was too much anger and disturbance"; "she didn't realize the upset she caused me" [syn: {disturbance}, {upset}] 2: activity that is an intrusion or interruption; "he looked around for the source of the disturbance"; "there was a disturbance of neural function" [syn: {disturbance}] 3: a disposition that is confused or nervous and upset [syn: {fluster}] 4: the act of causing disorder [syn: {disruption}]
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