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Webster 1913 Edition


Conoid

Co′noid

(kō′noid)
,
Noun.
[Gr.
κωνοειδήσ
conical;
κῶνοσ
cone +
εἶδοσ
form: cf. F.
conoïde
.]
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.

Co′noid

Adj.
Resembling a cone; conoidal.

Webster 1828 Edition


Conoid

CONOID

,
Noun.
[Gr., a cone, form.]
1.
In geometry, a solid formed by the revolution of a conic section about its axis. If the conic section is a parabola, the resulting solid is a parabolic conoid, or paraboloid; if a hyperbola, the solid is a hyperbolic conoid, or hyperboloid; of an ellipse, an elliptic conoid, a spheroid, or an ellipsoid.
2.
In anatomy, a gland in the third ventricle of the brain, resembling a cone or pine-apple, and called the pineal gland.

Definition 2024


conoid

conoid

English

Adjective

conoid (comparative more conoid, superlative most conoid)

  1. Shaped like a cone; conical

Translations

Noun

conoid (plural conoids)

  1. Anything shaped like a cone.
  2. (geometry) A Catalan surface all of whose rulings intersect some fixed line.
  3. (geometry) A solid formed by the revolution of a conic section about its axis.
    A parabolic conoid is a paraboloid; an elliptic conoid is an ellipsoid.

Hyponyms

  • (geometry): right conoid hyperbolic paraboloid

Translations