What is the meaning of Ellipse?

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.

To remove from a phrase a word which is grammatically needed, but which is clearly understood without having to be stated.

ellipse

ellipsis

ellipse

ellipsis

ablative singular of ellipsis

an ellipse

an ellipsis

an ellipse

an ellipsis

Source: wiktionary.org