The state of being eccentric; deviation from the customary line of conduct; oddity.
- The quality of being eccentric.
- Deviation from the normal, expected, or established.
- An example or instance of eccentric behavior.
- Physics The distance between the center of an eccentric and its axis.
- Mathematics The ratio of the distance of any point on a conic section from a focus to its distance from the corresponding directrix. This ratio is constant for any particular conic section.