# eccentricity

- an oddity or peculiarity, as of conduct: an interesting man, known for his eccentricities.
- the quality of being eccentric.
- the amount by which something is eccentric.
- Machinery. the distance between the centers of two cylindrical objects one of which surrounds the other, as between an eccentric and the shaft on which it is mounted.
- Mathematics. a constant expressed as the ratio of the distance from a point on a conic to a focus and the distance from the point to the directrix.

## Origin of eccentricity

## Synonyms for eccentricity

See more synonyms for on Thesaurus.com## Related Words for eccentricity

peculiarity, idiosyncrasy, foible, quirk, weirdness, abnormality, strangeness, oddity, nonconformity, aberration, kink, irregularity, caprice, anomaly, singularity, oddness, queerness, unconventionality, whimsicality, capriciousness## Examples from the Web for eccentricity

### Contemporary Examples of eccentricity

But Jenkins concedes that eccentricity is not what it once was.

Both his genius and his eccentricity are on full display in the Declaration of Independence.

“I adore them, I find them so hilarious, full of eccentricity, and full of faults,” she tells The Daily Beast in French.

The most interesting part of eccentricity may be just how wasteful it usually is.

It is brought down too a caricature, forgetting her eccentricity, her innovative fabrics, even a certain sense of purity.

Report: Christian Lacroix Will Create Special Couture Collection for SchiaparelliMisty White Sidell

April 17, 2013

### Historical Examples of eccentricity

The female sex is not often guilty of this eccentricity, but instances have been known.

His eccentricity was a combination of absent-mindedness and irritability.

The Confessions of a Caricaturist, Vol. 1 (of 2)Harry Furniss

Not unless you are very, very rich; then it might be considered an eccentricity.

Cap'n Warren's WardsJoseph C. Lincoln

She was a born mimic, and could hit off to a hair an eccentricity or an affectation.

The ChristianHall Caine

Not that she was tired of it; on the contrary, she hoped everything from Ted's eccentricity.

Audrey CravenMay Sinclair

## eccentricity

- unconventional or irregular behaviour
- deviation from a circular path or orbit
- a measure of the noncircularity of an elliptical orbit, the distance between the foci divided by the length of the major axis
- geometry a number that expresses the shape of a conic section: the ratio of the distance of a point on the curve from a fixed point (the focus) to the distance of the point from a fixed line (the directrix)
- the degree of displacement of the geometric centre of a rotating part from the true centre, esp of the axis of rotation of a wheel or shaft

## Word Origin and History for eccentricity

## eccentricity

- A measure of the deviation of an elliptical path, especially an orbit, from a perfect circle. It is equal to the ratio of the distance between the foci of the ellipse to the length of the major axis of the ellipse (the distance between the two points farthest apart on the ellipse). Eccentricity ranges from zero (for a perfect circle) to values approaching 1 (highly elongated ellipses).
- 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.