- Rhymes: -eɪʃən
- (uncountable) Agitation; the state of being perturbed
- (countable) A small change in a physical system, or more broadly any definable system (such as a biological or economic system)
- (countable, astronomy, physics) Variation in an orbit due to the influence of external bodies
a small change in a physical system or any definable system
From Latin perturbatio.
perturbation f (plural perturbations)