Perturbation - Definition
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, perturbation, upset]
2: (physics) a secondary influence on a system that causes it to
deviate slightly
3: activity that is a malfunction, intrusion, or interruption;
"the term `distress' connotes some degree of perturbation and
emotional upset"; "he looked around for the source of the
disturbance"; "there was a disturbance of neural function"
[syn: perturbation, disturbance]
4: a disposition that is confused or nervous and upset [syn:
perturbation, fluster]
5: the act of causing disorder [syn: disruption,
perturbation]