Oval — O val, n. A body or figure in the shape of an egg, or popularly, of an ellipse. [1913 Webster] {Cassinian oval} (Geom.), the locus of a point the product of whose distances from two fixed points is constant; so called from Cassini, who first… … The Collaborative International Dictionary of English
Cassinian ovals — Cas*sin i*an o vals (Math.) See under {Oval}. [1913 Webster] … The Collaborative International Dictionary of English
Cassini oval — Some Cassini ovals. (b=0.6a, 0.8a, a, 1.2a, 1.4a, 1.6a) A Cassini oval is a plane curve defined as the set (or locus) of points in the plane such that the product of the distances to two fixed points … Wikipedia
Polynomial lemniscate — In mathematics, a polynomial lemniscate or polynomial level curve is a plane algebraic curve of degree 2n, constructed from a polynomial p with complex coefficients of degree n.For any such polynomial p and positive real number c, we may define a … Wikipedia
cassinoid — Geom. (ˈkæsɪnɔɪd) [a. F. cassinoide: see cassinian and oid.] A curve which Cassini wished to substitute for the ellipse, in explanation of the planetary movements: an oval having two foci, such that the product of the focal radii of any point on… … Useful english dictionary
