ellipse

/ɪˈlɪps/

ellipse

English Noun

Definition

A closed curve, the locus of a point such that the sum of the distances from that point to two other fixed points (called the foci of the ellipse) is constant; equivalently, the conic section that is the intersection of a cone with a plane that does not intersect the base of the cone.

Etymology

From French ellipse. Doublet of ellipsis.