noun

# perturbation theory

perturbation theory

**MLA Style**

"perturbation theory." YourDictionary, n.d. Web. 16 October 2018. <http://www.yourdictionary.com/perturbation-theory>.

**APA Style**

perturbation theory. (n.d.). Retrieved October 16th, 2018, from http://www.yourdictionary.com/perturbation-theory

(*uncountable*)

- 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.

**MLA Style**

"perturbation theory." YourDictionary, n.d. Web. 16 October 2018. <http://www.yourdictionary.com/perturbation-theory>.

**APA Style**

perturbation theory. (n.d.). Retrieved October 16th, 2018, from http://www.yourdictionary.com/perturbation-theory