Su boruları silindirdir.
- Water pipes are cylinders.
Arabanın silindir kapağı kırıldı.
- The cylinder head of the car is broken.
When the two-dimensional curve is a circle, the cylinder is called a circular cylinder. When the axis is perpendicular to the plane of the curve, the cylinder is called a right cylinder. In non-mathematical usage, both 'right and circular are usually implied.