| 释义 |
oval
o·val O0172700 (ō′vəl)adj.1. Resembling an egg in shape.2. Resembling an ellipse in shape; elliptical.n.1. An egg-shaped or elliptical form or figure.2. An elliptical track, as for racing or athletic events.
[Medieval Latin ōvālis, from Latin ōvum, egg; see awi- in Indo-European roots.]
o′val·ly adv.o′val·ness n.oval (ˈəʊvəl) adjhaving the shape of an ellipse or ellipsoidnanything that is oval in shape, such as a sports ground[C16: from Medieval Latin ōvālis, from Latin ōvum egg] ˈovally adv ˈovalness, ovality n
Oval (ˈəʊvəl) n (Placename) the Oval a cricket ground in south London, in the borough of Lambetho•val (ˈoʊ vəl)
adj. 1. having the general form or outline of an egg; egg-shaped. 2. ellipsoidal or elliptical. n. 3. something that is oval in shape or outline. 4. an elliptical field or a field on which an elliptical track is laid out, as for athletic contests. [1560–70; < New Latin ōvālis= Latin ōv(um) egg1 + -ālis -al1] o′val•ly, adv. o′val•ness, o•val′i•ty, n. Thesaurus| Noun | 1. |  oval - 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"ellipseconic, conic section - (geometry) a curve generated by the intersection of a plane and a circular conecircle - ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point; "he calculated the circumference of the circle" | | Adj. | 1. | oval - rounded like an eggegg-shaped, elliptical, oval-shaped, oviform, ovoid, prolate, ovate, ellipticrounded - curving and somewhat round in shape rather than jagged; "low rounded hills"; "rounded shoulders" |
ovaladjective elliptical, egg-shaped, ovoid, ovate, ellipsoidal, oviform a small oval picture frameovaladjectiveResembling an egg in shape:ovate, oviform, ovoid, ovoidal.Translationsoval (ˈəuvəl) adjective shaped like an egg. an oval table. 卵形的，橢圓的 卵形的，椭圆的 noun an oval shape. He drew an oval. 卵形，橢圓形 卵形，椭圆形 Oval
Oval the. a cricket ground in south London, in the borough of Lambeth OvalResembling 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. ovalA marble chip which has been tumbled until a smooth oval shape has resulted; used for terrazzo concrete.oval
o·val (ō'văl), 1. Relating to an ovum. 2. Egg-shaped, resembling in outline the longitudinal section of an egg. oval (ō′văl) [L. ovalis, egg-shaped] 1. Pert. to an ovum. 2. Shaped like an egg or an ellipse, esp. with one end larger than the other; elliptical. 3. Something shaped like an oval.OVAL
| Acronym | Definition |
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| OVAL➣Object Based Virtual Application Language | | OVAL➣Open Vulnerability Assessment Language | | OVAL➣Organisational, Vocational and Adult Learning (Australia) | | OVAL➣Orlando Visual Artists League | | OVAL➣Our Vision for Asian Leadership (various universities) | | OVAL➣Ohio Valley Art League (est. 1991) | | OVAL➣Ohio Valley Area Libraries |
oval
Synonyms for ovaladj ellipticalSynonyms- elliptical
- egg-shaped
- ovoid
- ovate
- ellipsoidal
- oviform
Synonyms for ovaladj resembling an egg in shapeSynonymsSynonyms for ovalnoun a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through itSynonymsRelated Wordsadj rounded like an eggSynonyms- egg-shaped
- elliptical
- oval-shaped
- oviform
- ovoid
- prolate
- ovate
- elliptic
Related Words |