ellipsoid


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to ellipsoid: geoid, ellipsoid joint

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.
[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]
References in periodicals archive ?
mesentericum (4 % spherical, 10 % sub-spherical and 87 % ellipsoid spores) and T.
TELIOSPORES oblong or ellipsoid, conical or rounded at apex, basal mostly roundish, slightly constricted or not constricted at the septum, 37.
As our following figures demonstrate plainly, the shapes of these ellipsoidal amplitude functions depend markedly on distance d between the centres of the ellipsoids.
Despite the fact, that Xsens MTi-G supports specialized magnetometer auto-calibration procedure, ellipsoid fitting algorithm was used to calibrate magnetometer.
0], a, b, c, [alpha], [beta], and [gamma], where [alpha], [beta], and [gamma] are the rotation angles of the ellipsoid surface around the axis directions X, Y, and Z, respectively.
The received set of unit vectors has a geometrical form of an ellipsoid with two axes (l (big axis) and m (small axis)), as it is shown on figure 1.
The bounding volumes most frequently used are spheres, cylinders, ellipsoids, and boxes.
Instead of the sphere uncertainty set, the minimum flat ellipsoid is calculated in [13,15], to model the ASV of SOI in the presence of multiple errors.
Urediniospores subgloboid, obovoid or ellipsoid, hyaline to pale yellow, (15-) 17-23 x (18-) 20-24 um; wall 1-1.
Without loss of generality, we assume the ellipsoid is fixed and centered at the origin with the equation
I simplified the galaxy to an ellipsoid 100,000 x 100,000 x 10,000 light-years in size, then subtracted an inner ellipsoid of 20,000 x 20,000 x 5,000 light-years under the (perhaps wild) assumption that the galaxy's center is too crowded with stars and such to be inhabitable.
We now present an elongated ellipsoid model of self-gravity.