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Что (кто) такое ovoid - определение
SHAPE
Ovaloid; Ovoid; Egg shaped; Egg-shaped; Egg (geometry); Egg shape; Oval (geometry); Oval-shaped; Ovalular; Egg curve; Oviform
![A [[speed skating rink]] is often called an oval](https://commons.wikimedia.org/wiki/Special:FilePath/Speedskating rink 400 meters with dimensions.svg?width=200 "A [[speed skating rink]] is often called an oval")
Ovoid
·noun A solid resembling an egg in shape.
II. Ovoid ·adj ·Alt. of Ovoidal.
ovoid
['??v??d]
¦ adjective
1. (of a solid or a three-dimensional surface) more or less egg-shaped.
2. (of a plane figure) oval.
¦ noun an ovoid body or surface.
Origin
C19: from Fr. ovoide, from mod. L. ovoides, from L. ovum 'egg'.
Ovoid (projective geometry)
SPHERE-LIKE SURFACE IN PROJECTIVE SPACE OF DIMENSION D ≥ 3
Ovoid (Projective geometry)
In projective geometry an ovoid is a sphere like pointset (surface) in a projective space of dimension . Simple examples in a real projective space are hyperspheres (quadrics).
Википедия
Oval
An oval (from Latin ovum 'egg') is a closed curve in a plane which resembles the outline of an egg. The term is not very specific, but in some areas (projective geometry, technical drawing, etc.) it is given a more precise definition, which may include either one or two axes of symmetry of an ellipse. In common English, the term is used in a broader sense: any shape which reminds one of an egg. The three-dimensional version of an oval is called an ovoid.
Примеры употребления для ovoid
1. In such conditions, a gator shows up first as only a set of pale white marks in the darkness –– ovoid eyes, triangle teeth.
2. We had to be very fast to take out the ovoid, open the box, put it in and close the box.
3. If further studies prove that the dark, ovoid features on the vast landscape are indeed lakes, Titan will be the only body in the solar system besides Earth possessing that geological feature.
4. In architecture, this mathematical yet unstable form has been used to mock classical reason, most wondrously by the baroque architect Francesco Borromini in the great ovoid staircase of the Barberini palace in Rome.