Source : Webster's Revised Unabridged Dictionary (1913)

Cylindric \Cy*lin"dric\ (s?-l?n"dr?k), Cylindrical
\Cy*lin"dric*al\ (-dr?-kal), a. [Gr. kylindriko`s, from
   ky`lindros cylinder: cf. F. cylindrique.]
   Having the form of a cylinder, or of a section of its convex
   surface; partaking of the properties of the cylinder.

   {Cylindrical lens}, a lens having one, or more than one,
      cylindrical surface.

   {Cylindric, or Cylindrical}, {surface} (Geom.), a surface
      described by a straight line that moves according to any
      law, but so as to be constantly parallel to a given line.
      

   {Cylindrical vault}. (Arch.) See under {Vault}, n.