n. Anything that has a form resembling that of a cone.n. n. A solid formed by the revolution of a conic section about its axis; ; -- more commonly called paraboloid, ellipsoid, etc.n. 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.adj. Resembling a cone; conoidal.