El-lipse', n.

noun

n. [Fr. ellipse, Lat. ellipsis, Gr. ἔλλειψις, prop. defect, the inclination of the ellipse to the base of the cone being in defect when compared with that of the side to the base. See infra.] (Geom.) An oval or oblong figure, bounded by a regular curve, which corresponds to an oblique projection of a circle, or an oblique section of a cone through its opposite sides.

An oval ellipse is shown with horizontal and vertical axes crossing at its center. — Ellipse.