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单词 ellipsoid
释义

ellipsoid


ellipsoidThe equation for an ellipsoid is x2/a2 + y2/b2 + z2/c2 = 1.

el·lip·soid

E0093100 (ĭ-lĭp′soid′)n. A geometric surface, all of whose plane sections are either ellipses or circles.
el·lip′soid′, el·lip′soi′dal (ĭ-lĭp′soid′l, ĕl′ĭp-, ē′lĭp-) adj.

ellipsoid

(ɪˈlɪpsɔɪd) n (Mathematics) a. a geometric surface, symmetrical about the three coordinate axes, whose plane sections are ellipses or circles. Standard equation: x2/a2 + y2/b2 + z2/c2 = 1, where ±a, ±b, ±c are the intercepts on the x-, y-, and z- axesb. a solid having this shape: the earth is an ellipsoid. ellipsoidal adj

el•lip•soid

(ɪˈlɪp sɔɪd)

n. 1. a solid figure whose plane sections are all ellipses or circles. adj. 2. ellipsoidal. [1715–25; < French ellipsoïde]

el·lip·soid

(ĭ-lĭp′soid′) A three-dimensional geometric figure resembling a flattened sphere. Any cross section of an ellipsoid is an ellipse or circle.
Thesaurus
Noun1.ellipsoid - a surface whose plane sections are all ellipses or circlesellipsoid - a surface whose plane sections are all ellipses or circles; "the Earth is an ellipsoid"plane figure, two-dimensional figure - a two-dimensional shape
Adj.1.ellipsoid - having the nature or shape of an ellipsoidellipsoidal, spheroidalrounded - curving and somewhat round in shape rather than jagged; "low rounded hills"; "rounded shoulders"
Translations

ellipsoid


ellipsoid

a geometric surface, symmetrical about the three coordinate axes, whose plane sections are ellipses or circles. Standard equation: x2/a2 + y2/b2 + z2/c2 = 1, where ?a, ?b, ?c are the intercepts on the x-, y-, and z- axes

ellipsoid

(i-lip -soid) A surface or solid whose plane sections are circles or ellipses. An ellipse rotated about its major or minor axis is a particular type of ellipsoid, called a prolate spheroid (major axis) or an oblate spheroid (minor axis).

Ellipsoid

 

a closed central quadric surface. An ellipsoid has a center of symmetry O (see Figure 1) and three axes of symmetry, which are called the axes of the ellipsoid. The plane sections of

Figure 1

ellipsoids are ellipses; in particular, one can always find a plane section that is a circle. In a suitable coordinate system the equation of an ellipsoid has the form

ellipsoid

[ə′lip‚sȯid] (mathematics) A surface whose intersection with every plane is an ellipse (or circle).

See ellipsoid

ellipsoid


el·lip·soid

(ē-lip'soyd), 1. A spheric or spindle-shaped condensation of phagocytic macrophages in a reticular stroma investing the wall of the splenic arterial capillaries shortly before they release their blood in the cords of red pulp. 2. The outer end of the inner segment of the retinal rods and cones. 3. Having the shape of an ellipse or oval. Synonym(s): sheath of Schweigger-Seidel [G. ellips, oval, + eidos, form]

Schweigger-Seidel,

Franz, German physiologist, 1834-1871. sheath of Schweigger-Seidel - (1) a spherical or spindle-shaped condensation of phagocytic macrophages in a reticular stroma investing the wall of the splenic arterial capillaries; - (2) the outer end of the inner segment of the retinal rods and cones. Synonym(s): ellipsoid

ellipsoid

1. The refractile outer portion of the inner member of a rod or cone cell. It is located between the myoid and the outer member of the cell, and contains mitochondria. The myoid is in contact with the external limiting membrane of the retina while the outer member is next to the pigment epithelium. 2. Surface of revolution generated by rotating an ellipse about a major or minor axis.

el·lip·soid

, ellipsoidal (ē-lip'soyd, -al) Spheric or spindle-shaped condensation of phagocytic macrophages in a reticular stroma investing wall of splenic arterial capillaries shortly before they release their blood in red pulp cords. [G. ellips, oval, + eidos, form]

ellipsoid


Related to ellipsoid: geoid, ellipsoid joint
  • all
  • noun
  • adj

Synonyms for ellipsoid

noun a surface whose plane sections are all ellipses or circles

Related Words

  • plane figure
  • two-dimensional figure

adj having the nature or shape of an ellipsoid

Synonyms

  • ellipsoidal
  • spheroidal

Related Words

  • rounded
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