from
The Collaborative International Dictionary of English v.0.48
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.
[1913 Webster]
{Cylindrical lens}, a lens having one, or more than one,
cylindrical surface.
{Cylindric surface} 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.
[1913 Webster]