cylinder

[ sil-in-der ]

/ ˈsɪl ɪn dər /

SEE MORE SYNONYMS FOR cylinder ON THESAURUS.COM

noun

Geometry. a surface or solid bounded by two parallel planes and generated by a straight line moving parallel to the given planes and tracing a curve bounded by the planes and lying in a plane perpendicular or oblique to the given planes.

any cylinderlike object or part, whether solid or hollow.

the rotating part of a revolver, containing the chambers for the cartridges.

(in a pump) a cylindrical chamber in which a piston slides to move or compress a fluid.

(in an engine) a cylindrical chamber in which the pressure of a gas or liquid moves a sliding piston.

(in certain printing presses)

a rotating cylinder that produces the impression and under which a flat form to be printed from passes.
either of two cylinders, one carrying a curved form or plate to be printed from, that rotate against each other in opposite directions.

(in certain locks) a cylindrical device for retaining the bolt until tumblers have been pushed out of its way.

(in a screw or cylindrical gear) an imaginary cylindrical form, concentric to the axis, defining the pitch or the inner or outer ends of the threads or teeth.

Computers. the tracks of a magnetic disk that are accessible from a single radial position of the access mechanism.

Textiles. the main roller on a carding machine, especially the roller covered with card clothing that works in combination with the worker and stripper rollers in carding fibers.

Archaeology. a cylindrical or somewhat barrel-shaped stone or clay object bearing a cuneiform inscription or a carved design, worn by the Babylonians, Assyrians, and kindred peoples as a seal and amulet.

verb (used with object)

to furnish with a cylinder or cylinders.

to subject to the action of a cylinder or cylinders.

RELATED WORDS

barrel

Nearby words

cygnus, cygnus a, cygnus x-1, cyke, cyl., cylinder, cylinder barrel, cylinder block, cylinder desk, cylinder front, cylinder glass

Origin of cylinder

1560–70; < Latin cylindrus < Greek kýlindros roller, cylinder, akin to kylíndein to roll

Related forms

cyl·in·der·like, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cylinder

When we step into that cylinder of dry air and certain doom, all we can think is what it will be like when it crashes.
The Malaysian Air Tragedy Reawakens a Primal Fear|Kelly Williams Brown|July 19, 2014|DAILY BEAST
That cylinder is in a chamber within the satellite, not unlike an astronaut aboard the International Space Station.
The Equivalence Principle and Testing Einstein With Spaceships and Atoms|Matthew R. Francis|June 4, 2014|DAILY BEAST
Agate was widely used to carve high-value objects like signets and cylinder seals in the ancient Near East.
Spain’s New ‘Holy Grail’: Jesus Couldn’t Afford That Kind of Bling|Candida Moss|April 6, 2014|DAILY BEAST
The point of having lots of businesses under one roof is that not every unit will fire on every cylinder in every quarter.
So Long, Washington Post|Daniel Gross|August 5, 2013|DAILY BEAST

He trades Pearl, 12, to a neighbor for some quilts, not quite a gallon of cylinder oil, and $7.
American Dreams: ‘Tobacco Road’ by Erskine Caldwell|Nathaniel Rich|April 30, 2012|DAILY BEAST
The cross-head is a small piece of aluminum bronze, running on round guides that also serve as cylinder braces.
Langley Memoir on Mechanical Flight, Parts I and II|S. P. (Samuel Pierpont) Langley and Charles M. (Charles Matthews) Manly
Helplessly the boy spun the cylinder and snapped the hammer again and again, but to no purpose.
Twenty-Four Unusual Stories for Boys and Girls|Anna Cogswell Tyler
This transplanter consists of a cylinder of thin sheet steel.
The Hawaiian Islands|The Department of Foreign Affairs
The weight descending caused the cylinder to revolve, setting the train in motion.
Time Telling through the Ages|Harry Chase Brearley
Auxiliary air ports were provided in the cylinder walls so that the pistons overran them at the end of their stroke.
A History of Aeronautics|E. Charles Vivian

British Dictionary definitions for cylinder

cylinder

/ (ˈsɪlɪndə) /

noun

a solid consisting of two parallel planes bounded by identical closed curves, usually circles, that are interconnected at every point by a set of parallel lines, usually perpendicular to the planes. Volume base area × length

a surface formed by a line moving round a closed plane curve at a fixed angle to it

any object shaped like a cylinder

the chamber in a reciprocating internal-combustion engine, pump, or compressor within which the piston movesSee also cylinder block

the rotating mechanism of a revolver, situated behind the barrel and containing cartridge chambers

printing any of the rotating drums on a printing press

Also called: cylinder seal a cylindrical seal of stone, clay, or precious stone decorated with linear designs, found in the Middle East and Balkans: dating from about 6000 bc

Also called: hot-water cylinder British a vertical cylindrical tank for storing hot water, esp an insulated one made of copper used in a domestic hot-water system

firing on all cylinders working or performing at full capability

verb

(tr) to provide (a system) with cylinders

Derived Forms

cylinder-like, adjective

Word Origin for cylinder

C16: from Latin cylindrus, from Greek kulindros a roller, from kulindein to roll

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for cylinder

cylinder

[ sĭl′ən-dər ]

n.

The surface generated by a straight line intersecting and moving along a closed plane curve, the directrix, while remaining parallel to a fixed straight line that is not on or parallel to the plane of the directrix.

A solid bounded by two parallel planes and such a surface, especially such a surface having a circle as its directrix.

A cylindrical or rodlike renal cast.

A cylindrical lens.

A cylindrical metal container for gases stored under high pressure.

Science definitions for cylinder

cylinder

[ sĭl′ən-dər ]

A three-dimensional surface or solid object bounded by a curved surface and two parallel circles of equal size at the ends. The curved surface is formed by all the line segments joining corresponding points of the two parallel circles.

Idioms and Phrases with cylinder

cylinder

see firing on all cylinders.

cylinder

noun

verb (used with object)

RELATED CONTENT

RELATED WORDS

Nearby words

Origin of cylinder

Related forms

Examples from the Web for cylinder

British Dictionary definitions for cylinder

cylinder

noun

verb

Derived Forms

Word Origin for cylinder

Medicine definitions for cylinder

cylinder

n.

Science definitions for cylinder

cylinder

Idioms and Phrases with cylinder

cylinder