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(s?l"?n-droid), n.[Gr. ky°lindros cylinder + -oid: cf. F. cylindrode.] 1. A solid body resembling a right cylinder, but having the bases or ends elliptical. 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. スポンサード リンク
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