·adj Resembling a cone; conoidal.
II. Conoid ·noun Anything that has a form resembling that of a cone.
III. Conoid ·noun 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.
IV. Conoid ·noun 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.