adj resembling a cone; conoidal.
2. conoid ·noun anything that has a form resembling that of a cone.
3. 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.
4. 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.