Result from Foreign Dictionaries (3 entries found)
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Paraboloid \Pa*rab"o*loid\ (-loid), n. [Parabola + -oid: cf. F.
parabolo["i]de.] (Geom.)
The solid generated by the rotation of a parabola about its
axis; any surface of the second order whose sections by
planes parallel to a given line are parabolas.
[1913 Webster]
Note: The term paraboloid has sometimes been applied also to
the parabolas of the higher orders. --Hutton.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Conoid \Co"noid\ (k[=o]"noid), n. [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.
[1913 Webster]
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.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
paraboloid
n 1: a surface having parabolic sections parallel to a single
coordinate axis and elliptic sections perpendicular to that
axis
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