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WordNet-Online
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Noun perturbation has 5 senses
- disturbance, perturbation, upset - an unhappy and worried mental state; "there was too much anger and disturbance"; "she didn't realize the upset she caused me"
--1 is a kind of agitation
- perturbation - (physics) a secondary influence on a system that causes it to deviate slightly
--2 is a kind of influence
--2 has particulars: variation
- perturbation, disturbance - activity that is an intrusion or interruption; "he looked around for the source of the disturbance"; "there was a disturbance of neural function"
--3 is a kind of activity
--3 has particulars: fuss, trouble, bother, hassle; magnetic storm
- perturbation, fluster - a disposition that is confused or nervous and upset
--4 is a kind of discomposure
- disruption, perturbation - the act of causing disorder
--5 is a kind of disturbance
--5 has particulars: dislocation, breakdown; surprise, surprisal
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