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Cylinder
01
(geometry) a solid or hollow shape with two circular bases at each end and straight parallel sides
Examples
The glass on the table was in the shape of a tall, slender cylinder.
02
a chamber in an engine in which a piston moves
Examples
The car 's engine has four cylinders.
03
a cylindrical container used for storing gases like oxygen or compressed air
Examples
The diver carried an oxygen cylinder on his back.
