Cylinder

/ˈsɪlɪndər/

Meaning & Definition

noun
A three-dimensional solid consisting of two parallel bases connected by a curved surface at a fixed distance from the center of the bases.
The engineer designed a cylinder to hold the compressed gas.
A geometric shape defined by a circular base and a height.
The volume of the cylinder can be calculated using the formula πr²h.
A hollow tube or chamber, often part of a machine or mechanism.
The car's engine contains several cylinders for efficient combustion.
A container for holding liquids or gases, typically with a circular cross-section.
The gas cylinder needs to be secured to prevent it from falling over.

Etymology

from Latin 'cylindrus' and Greek 'kylindros', meaning 'roller'.

Common Phrases and Expressions

cylinder head
The top part of an engine cylinder that contains the combustion chamber and valves.
cylinder lock
A type of lock with a cylindrical mechanism.

Related Words

ellipse
A shape that is like a stretched circle, often related to the cross-section of a cylinder.
cone
A three-dimensional geometric figure with a circular base tapering smoothly to a point.

Slang Meanings

A term used in some contexts to refer to a canister or container.
Pass me that cylinder of spray paint.