per·tur·ba·tion /ˌpɝtɚ/
擾動
perturbation
擾動
Per·tur·ba·tion n.
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.
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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: (physics) a secondary influence on a system that causes it
to deviate slightly
3: 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]
4: a disposition that is confused or nervous and upset [syn: fluster]
5: the act of causing disorder [syn: disruption]