Perturbation of biological system (Biology)

Perturbation or perturb may refer to any of numerous concepts in several fields:

Perturbation theory, mathematical methods that give approximate solutions to problems that cannot be solved exactly
Perturbation (geology), changes in the nature of alluvial deposits over time
Perturbation (astronomy), alterations to an object's orbit caused by gravitational interactions with other bodies
Perturbation theory (quantum mechanics), a set of approximation schemes directly related to mathematical perturbation for describing a complicated quantum system in terms of a simpler one
Perturbation (biology), an alteration of the function of a biological system, induced by external or internal mechanisms
Perturbation (economic), an alteration of the function of an economic system, induced by external or internal mechanisms
Perturbation (machine learning), making changes in the dataset to (re)learn a classifier (used in bagging and boosting).

See also