# eccentricity

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**Eccentricity (mathematics)**— In mathematics, the eccentricity, denoted e or varepsilon, is a parameter associated with every conic section. It can be thought of as a measure of how much the conic section deviates from being circular.In particular, * The eccentricity of a… …22

**Eccentricity (behavior)**— This article is about eccentricity in behavior and popular usage. For other uses, see Eccentricity (disambiguation). Madame de Meuron with her characteristic ear trumpet and hat, a Swiss eccentric In popular usage, eccentricity (also called… …23

**Eccentricity vector**— In astrodynamics, the eccentricity vector of a conic section orbit is the vector pointing towards the periapsis and with magnitude equal to the orbit s scalar eccentricity. The magnitude is unitless. CalculationThe eccentricity vector mathbf{e} …24

**eccentricity**— noun a) The quality of being eccentric; any eccentric behaviour. b) The ratio, constant for any particular conic section, of the distance of a point from the focus to its distance from the directrix …25

**eccentricity**— Synonyms and related words: aberrance, aberrancy, aberration, abnormality, abnormity, absurdity, absurdness, amorphism, animus, anomalism, anomalousness, anomaly, aptitude, arrhythmia, asininity, battiness, bent, bias, bizarreness, bizarrerie,… …26

**eccentricity**— I (Roget s IV) n. Syn. peculiarity, oddity, idiosyncrasy; see irregularity 2 . See Synonym Study at idiosyncrasy . II (Roget s 3 Superthesaurus) n. quirk, peculiarity, oddity, idiosyncracy, abnormality, foible, idiocrasy, curiousity, irregularity …27

**eccentricity**— ecÂ·cenÂ·tricÂ·iÂ·ty || â€šeksen trÉªsÉ™tÉª n. irregularity, oddity; strangeness, unconventionality …28

**eccentricity**— n. 1. Deviation from circularity, ellipticity, oblateness, flatness, flattening. 2. Distance from centre to focus. 3. Irregularity, peculiarity, oddness, oddity, singularity, waywardness, strangeness, aberration …29

**eccentricity**— n 1. oddity, curiosity, rarity; irregularity, incongruity, variation, abnormality, discrepancy, difference, variance, dissimilitude, disparity, inconsistency; exception, singularity, particularity; idiosyncrasy, idiocrasy, mannerism, quirk, twist …30

**eccentricity**— ec·cen·tric·i·ty …