It's not oval either. It's an asymmetrical mix of oval and tapered, with one end bigger than the other — yup, chicken eggs are an 'asymmetric tapered oval'. ... Another reason for eggs to be egg-shaped is that they fit together quite snugly in the nest, with only small air spaces between them.

What shape is an egg shape?

Egg shape. The shape of an egg is approximated by the "long" half of a prolate spheroid, joined to a "short" half of a roughly spherical ellipsoid, or even a slightly oblate spheroid. These are joined at the equator and share a principal axis of rotational symmetry, as illustrated above.

Is an egg an oval or ellipse?

An oval is a curve resembling a squashed circle but, unlike the ellipse, without a precise mathematical definition. The word oval derived from the Latin word "ovus" for egg. Unlike ellipses, ovals sometimes have only a single axis of reflection symmetry (instead of two).