Cylinder (disambiguation)

A cylinder is a three-dimensional geometric shape. Cylinder may also refer to:

Science and technology
 Cylinder (engine), the space in which a piston travels in an engine
 Gas cylinder, a container for storing compressed gas
 Diving cylinder, a type of gas cylinder used in scuba-diving
 Cylinder (firearms), the rotating device that contains the firing chambers of a revolver
 Cylinder lock, the part that is profiled to accept a specific key
 Graduated cylinder, glassware for measurement of liquids in laboratories
 Hydraulic cylinder, using pressurized liquid
 Pneumatic cylinder, using compressed gas
 Cylinder (locomotive), in a steam locomotive

Information storage
 Phonograph cylinder, the dominant medium of audio storage from the 1870s until 1904.
 Cylinder (disk drive), in computer hard drives
 Cylinder seal, an ancient, often clay, cylinder engraved with a 'picture story'
 Cuneiform scripts, on cylinders, e.g. ancient documents of Babylonian kings:
 Cylinder of Nabonidus
 Cyrus Cylinder

Mathematics
 Cylinder (algebra), the Cartesian product of a set with its superset

Places
 Cylinder, Iowa, a city in the United States

Related pages
 Cylinder set, the natural open set of a product topology
 Cylinder hat, a type of hat popular in 19th and early 20th centuries