# ellipsoid

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

## el·lip·soid

(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- axes
b. a solid having this shape: the earth is an ellipsoid.

## el•lip•soid

(ɪˈlɪp sɔɪd)

n.
1. a solid figure whose plane sections are all ellipses or circles.
[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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 ellipsoid - 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 ellipsoidrounded - curving and somewhat round in shape rather than jagged; "low rounded hills"; "rounded shoulders"
Translations
ellipsoidi
ellipsoid
References in periodicals archive ?
The Italian Chapel, still extant today, is disposed upon an obtrusively elliptic plan, and it is this chapel's ovaloid structure that is thought to have been an architectural model that ultimately triggered Kepler's astronomical discovery (Horsky 1990:189-190).
Another Baumer success is the 900 feeding system, which allows handling rectangular, ovaloid, and shaped containers--even the unsteady ones--both with film and with wraparound carton.
Regarding the second type of structures, the type B hypogea, these are also negative structures dug into the bedrock, of ovaloid plan, walls that tend to be slightly declined and mostly irregular, with concave funerary chambers that have irregular and slightly declined bases.

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