After taking gold in the halfpipe snowboarding event in each of the past two Olympics, American star Shaun White was in line to add some additional hardware to his trophy case with a medal in the new slopestyle event in Sochi...
Any point of an oval belongs to an arc with a constant radius (shorter or longer), but in an ellipse, the radius is continuously changing. In common speech. In common speech, oval means a shape rather like an egg or an ellipse, which may be two-dimensional or three-dimensional.
Oval. 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).