Associations to the word «Perturbation»

Wiktionary

PERTURBATION, noun. (uncountable) Agitation; the state of being perturbed
PERTURBATION, noun. (countable) A small change in a physical system, or more broadly any definable system (such as a biological or economic system)
PERTURBATION, noun. (countable) (astronomy) (physics) Variation in an orbit due to the influence of external bodies
PERTURBATION THEORY, noun. A mathematical technique for finding an approximate solution to a problem that cannot be solved exactly, by starting from the exact solution of a related problem; used in modelling physical interactions between particles, etc.

Dictionary definition

PERTURBATION, noun. An unhappy and worried mental state; "there was too much anger and disturbance"; "she didn't realize the upset she caused me".
PERTURBATION, noun. (physics) a secondary influence on a system that causes it to deviate slightly.
PERTURBATION, noun. 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".
PERTURBATION, noun. A disposition that is confused or nervous and upset.
PERTURBATION, noun. The act of causing disorder.

Wise words

When you have spoken the word, it reigns over you. When it is unspoken you reign over it.
Arabian Proverb