oval adj : rounded like an egg [syn: egg-shaped, elliptic, elliptical, ovate, oviform, ovoid, prolate] n : a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it; "the sums of the distances from the foci to any point on an ellipse is constant" [syn: ellipse]
- Note: an ellipse is a precise mathematical shape, but an oval is not.
- Having the shape of an oval.
In geometry, an oval or ovoid (from Latin ovum, 'egg') is any curve resembling an egg or an ellipse. Unlike other curves, the term 'oval' is not well-defined and many distinct curves are commonly called ovals. These curves have in common that:
Egg shapeThe shape of an egg is approximately that of half each a prolate (long) and roughly spherical (potentially even minorly oblate/short) ellipsoid joined at the equator, sharing a principal axis of rotational symmetry, as illustrated above. Although the term egg-shaped usually implies a lack of reflection symmetry across the equatorial plane, it may also refer to true prolate ellipsoids. It can also be used to describe the 2-dimensional figure that, revolved around its major axis, produces the 3-dimensional surface.
In the theory of projective planes, oval is used to mean a set of q + 1 non-collinear points in PG(2,q), the projective plane over the finite field with q elements. See oval (projective plane).
oval in German: Oval (Geometrie)
oval in Spanish: Óvalo (geometría)
oval in French: Ovale
oval in Italian: Ovale
oval in Georgian: ოვალი
oval in Lithuanian: Ovalas
oval in Dutch: Ovaal
oval in Japanese: オーバル
oval in Polish: Owal
oval in Russian: Овал
oval in Simple English: Oval
oval in Slovenian: Oval (geometrija)
oval in Serbian: Овал
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