Any object in the form of a circular cylinder.
A surface created by projecting a closed two-dimensional curve along an axis intersecting the plane of the curve.
The part of a revolver that contains chambers for the cartridges.
A container in the form of a cylinder with rounded ends for storing pressurized gas; a gas cylinder.
An early form of phonograph recording, made on a wax cylinder.
A cylindrical cavity or chamber in a mechanism, such as the counterpart to a piston found in a piston-driven engine.
The corresponding tracks on a vertical arrangement of disks in a disk drive considered as a unit of data capacity.
The space in which a piston travels inside a reciprocating engine or pump.
A solid figure bounded by a cylinder and two parallel planes intersecting the cylinder.
To calender; to press (paper, etc.) between rollers to make it glossy.
A ring-shaped object, especially a large ring-shaped chamber used in physical research.
The thickening of a membrane closing a wood-cell pit (as of gymnosperm tracheids) having the secondary cell wall arched over the pit cavity.
A rounded ridge of bone or muscle, especially one on the occipital bone.
{{lb|en|topology|in combination|n-torus|4-torus|etc.}} The product of the specified number of circles.
A topological space which is a product of two circles.
A large convex molding, typically semicircular in cross section, which commonly projects at the base of a column and above the plinth.
The end of the peduncle or flower stalk to which the floral parts (or in the Asteraceae, the florets of a flower head) are attached.