Perturbation

Pronunciation

• Rhymes: -eɪʃən

Origin

perturb + -ation

Full definition of perturbation

Noun

1. (uncountable) Agitation; the state of being perturbed
2. (countable) A small change in a physical system, or more broadly any definable system (such as a biological or economic system)
3. (countable, astronomy, physics) Variation in an orbit due to the influence of external bodies