cylindrical

adj. of or pertaining to a cylinder, shaped like cylinder

In mathematics, a cylinder is a quadric surface, with the following equation in Cartesian coordinates:This equation is for an elliptic cylinder, a generalization of the ordinary, circular cylinder (a = b). Even more general is the generalized cylinder: the cross-section can be any curve. The cylinder is a degenerate quadric because at least one of the coordinates (in this case z) does not appear in the equation. By some definitions the cylinder is not considered to be a quadric at all.
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Adjective
1. having the form of a cylinder or tube
(synonym) tube-shaped, tubelike, vasiform
(similar) rounded
2. related to or having the shape or properties of a cylinder
(synonym) cylindric
(pertainym) cylinder

(a.)
Having the form of a cylinder, or of a section of its convex surface; partaking of the properties of the cylinder.
  

adj.
بيلن سا, نل دار, کوٹھي دار, اسطوانہ نما