ellipsoid

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Conoid \Co"noid\ (k[=o]"noid), noun [Gr. kwnoeidh's conical; kw^nos cone + e'i^dos form: cf. F. cono["i]de.]

1. Anything that has a form resembling that of a cone.

2. (Geom.)
(a) A solid formed by the revolution of a conic section
about its axis; as, a parabolic conoid, elliptic
conoid, etc.; -- more commonly called {paraboloid},
{**ellipsoid**}, etc.
(b) A surface which may be generated by a straight line
moving in such a manner as always to meet a given
straight line and a given curve, and continue parallel
to a given plane. --Math. Dict.

From The Collaborative International Dictionary of English v.0.48 [gcide]:

**Ellipsoid** \El*lip"soid\, noun [Ellipse + -oid: cf. F. ellipsoide.]
(Geom.)
A solid, all plane sections of which are ellipses or circles.
See {Conoid}, noun, 2
(a) .

Note: The **ellipsoid** has three principal plane sections, a, b,
and c, each at right angles to the other two, and each
dividing the solid into two equal and symmetrical
parts. The lines of meeting of these principal sections
are the axes, or principal diameters of the **ellipsoid**.
The point where the three planes meet is the center.

{**Ellipsoid** of revolution}, a spheroid; a solid figure
generated by the revolution of an ellipse about one of its
axes. It is called a prolate spheroid, or prolatum, when
the ellipse is revolved about the major axis, and an
oblate spheroid, or oblatum, when it is revolved about the
minor axis. **Ellipsoid**

From The Collaborative International Dictionary of English v.0.48 [gcide]:

**Ellipsoid** \El*lip"soid\, Ellipsoidal \El'lip*soi"dal\, adjective
Pertaining to, or shaped like, an **ellipsoid**; as, **ellipsoid** or
ellipsoidal form. Elliptic

From WordNet (r) 3.0 (2006) [wn]:

adjective

1: having the nature or shape of an **ellipsoid** [syn:
{**ellipsoid**}, {ellipsoidal}, {spheroidal}]

noun

1: a surface whose plane sections are all ellipses or circles;
"the Earth is an **ellipsoid**"

The dictionary definitions are retrieved from a local copy of two of the open source __ DICT__ dictionaries. Click

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Sunday, March 1, 2015 11:27:31 PM Coordinated Universal Time (UTC)

DEFINE.COM_ellipsoid_2015-03-01_23-27-31_54-147-243-244