'Cylindroid' definitions:

Definition of 'Cylindroid'

From: GCIDE

Cylindroid \Cyl"in*droid\ (s?l"?n-droid), n. [Gr. ky`lindros cylinder + -oid: cf. F. cylindro["i]de.]
1. A solid body resembling a right cylinder, but having the bases or ends elliptical. [1913 Webster]
2. (Geom.) A certain surface of the third degree, described by a moving straight line; -- used to illustrate the motions of a rigid body and also the forces acting on the body. [1913 Webster]