# Oval

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## Oval

the. a cricket ground in south London, in the borough of Lambeth

## Oval

Resembling an egg in shape, ellipsoidal or elliptical; it is duocentric with a long and short axis.

## Oval

a closed convex plane curve. A convex curve is a curve that has no more than two real points in common with any line. The ellipse and the circle are examples of ovals. If an oval has a tangent at every point, then to any direction in the plane there correspond just two tangents parallel to that direction.

Many theorems deal with properties of ovals. We mention two such theorems. (1) On every oval there are at least four points at which the curvature reaches a maximum or minimum. This is the so-called four-vertex theorem. The ellipse has precisely four such points—the ends of the major and minor axes. (2) If we have an oval of constant width, that is, if the distance d between any two parallel tangents to the oval is the same for all directions, then the length of the oval is equal to π d. The circle is the simplest oval of constant width. Another example is the figure obtained (Figure 1) by drawing six arcs of circles with centers at the vertices of an equilateral triangle with side a, where three of the circles have radii c, c arbitrary, and three have radii a + c.

Figure 1

In algebraic geometry the term “oval” is also applied to closed connected components of plane algebraic curves. There, however, the component is not necessarily convex.

## oval

[′ō·vəl]
(mathematics)
A curve shaped like a section of an egg.

## oval

A marble chip which has been tumbled until a smooth oval shape has resulted; used for terrazzo concrete.
References in periodicals archive ?
Klegg's signature egg-shaped speakers are slightly larger than the size of a credit card and fit in the palm of your hand, but they pack quite a punch
But, rather than reproducing the traditional European-style mushroom-shaped truffles, he created egg-shaped truffles with shells of imported Belgian chocolate and a variety of smooth creamy fillings.
But headmaster David Williamson of Whitburn Academy in West Lothian has warned parents the egg-shaped toys are only top of the class when it comes to making a mess.
The plant, inherited from her mother-in-law about five years ago, is a scraggly-looking thing, with each spindly stalk tipped by an egg-shaped bud.
In an overly traditional field, Joseph Schmidt is known for its innovative chocolate creations and chocolate sculptures, the most famous being the company's trademark egg-shaped truffle.
However you like your eggs they should be done to perfection in this wacky, egg-shaped frying pan, pounds 25, Kitschen Sync.
Further down this same alley, also over a chain link fence, more than 1,000 egg-shaped, yellow-orange passion fruits, clinging to their own tendriled vines, are ripening despite no evidence of regular care.
Both of these egg-shaped cameras are compatible with Microsoft Windows 98 SE, 2000, ME and XP and are "plug and play" compatible.
Up to 800 people at a time will ride in the wheel's 32 egg-shaped glass cases when it opens to the public in January.
Chicago Bridge & Iron is the global technology leader in egg-shaped digestion.
We figured out that we have had 100 years of fly-fishing between us, and this was singularly the greatest day of our lives,'' Chouinard said, demonstrating with a blacksmith's precision the graceful, egg-shaped arc made by a double-handed rod.
Egg-shaped Tamagotchi toys have an interactive screen featuring a chick hatching.

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