### Definition of Eccentricity

1. Noun. Strange and unconventional behavior.

Generic synonyms: Strangeness, Unfamiliarity
Specialized synonyms: Oddity, Oddness
Derivative terms: Eccentric

2. Noun. (geometry) a ratio describing the shape of a conic section; the ratio of the distance between the foci to the length of the major axis. "A circle is an ellipse with zero eccentricity"
Category relationships: Geometry
Generic synonyms: Ratio
Derivative terms: Eccentric

3. Noun. A circularity that has a different center or deviates from a circular path.
Generic synonyms: Circularity, Disk Shape
Antonyms: Concentricity
Derivative terms: Eccentric

### Definition of Eccentricity

1. n. The state of being eccentric; deviation from the customary line of conduct; oddity.

### Definition of Eccentricity

1. Noun. The quality of being eccentric; any eccentric behaviour. ¹

2. Noun. (mathematics) The ratio, constant for any particular conic section, of the distance of a point from the focus to its distance from the directrix ¹

¹ Source: wiktionary.com

1. [n -TIES]

### Medical Definition of Eccentricity

1. Origin: Cf. F. Excentricite. 1. The state of being eccentric; deviation from the customary line of conduct; oddity. 2. The ratio of the distance between the center and the focus of an ellipse or hyperbola to its semi-transverse axis. 3. The ratio of the distance of the center of the orbit of a heavenly body from the center of the body round which it revolves to the semi-transverse axis of the orbit. 4. The distance of the center of figure of a body, as of an eccentric, from an axis about which it turns; the throw. Source: Websters Dictionary (01 Mar 1998)

### Lexicographical Neighbors of Eccentricity

 eccentriceccentric amputationeccentric contractioneccentric contractionseccentric fixationeccentric hypertrophyeccentric implantationeccentric occlusioneccentric personeccentric position eccentric relationeccentricaleccentricallyeccentricateeccentricitieseccentricityeccentrickeccentricseccentrochondroplasiaeccentropiesis ecchondromaecchondrosisecchondrotomeecchordosis physaliformisecchymomaecchymoseecchymosedecchymosesecchymosis

### Literary usage of Eccentricity

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Theory and Practice of Modern Framed Structures, Designed for the Use of by John Butler Johnson, Charles Walter Bryan, Frederick Eugene Turneaure, William Spaulding Kinne (1916)
"The effects of weight and pin eccentricity are more readily controlled and should ... The question of necessary eccentricity •of pin will first be examined. ..."

2. The Principles and Practice of Surveying by Charles Blaney Breed, George Leonard Hosmer (1908)
"The eccentricity in this case is also measured horizontally but at right angles to the horizontal ... 317. Correction for Eccentricity.—The eccentricity of ..."

3. The Moon: Her Motions, Aspect, Scenery, and Physical Condition by Richard Anthony Proctor (1873)
"The range within which the eccentricity varies is, however, one of the most important of all the features of the lunar theory. ..."

4. An Introduction to Celestial Mechanics by Forest Ray Moulton (1914)
"Effects of the Normal Component upon the Eccentricity. If 2a represents the major axis, the eccentricity is given by After the action of the normal ..."

5. A Manual of Spherical and Practical Astronomy: Embracing the General by William Chauvenet (1891)
"Eccentricity OF GRADUATED CIRCLES. 25. The centre of the alidade is seldom, if ever, ... To investigate the effect of such eccentricity, let C^Fig. ..."