- (n.) A disturbance in the regular elliptic or other motion of a heavenly body, produced by some force additional to that which causes its regular motion; as, the perturbations of the planets are caused by their attraction on each other.
- (n.) The act of perturbing or the state of being perturbed; especially, agitation of mind.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). perturbation. Retrieved September 24, 2026, from http://smartdefine.org/perturbation/definitions/2044238 |
| Chicago | Webster's. 2011. "perturbation" http://smartdefine.org/perturbation/definitions/2044238 (accessed September 24, 2026). |
| Harvard | Webster's 2011, perturbation, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/perturbation/definitions/2044238>. |
| MLA | Webster's. "perturbation" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/perturbation/definitions/2044238> |