a. Elbowlike; anconal. [ 1913 Webster ]

n. [ Gr. kwnoeidh`s conical; kw^nos cone + e'i^dos form: cf. F. conoïde. ] 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 ]

a. Resembling a cone; conoidal. [ 1913 Webster ]

a. [ Cf. F. conoïdal. ] Nearly, but not exactly, conical. Lindley. [ 1913 Webster ]

{ , a. Pertaining to a conoid; having the form of a conoid. [ 1913 Webster ]

n. [ Zircon + oid. ] (Crystallog.) A double eight-sided pyramid, a form common with tetragonal crystals; -- so called because this form often occurs in crystals of zircon. [ 1913 Webster ]