- The definition of a cylinder is a three dimensional shape with two round shapes at either end and two parallel lines connecting the round ends.
An example of cylinder is a can of tomato soup.
cylinder definition by Webster's New World
- in geometry, a solid figure consisting of two parallel bases in the form of congruent, closed curves joined by a smooth, continuous, closed surface; specif., such a figure () having circular bases and a surface perpendicular to the bases
- the surface of such a solid
- anything having the shape of a cylinder, whether hollow or solid; specif.,
- the turning part of a revolver, containing chambers for cartridges
- the chamber in which the piston moves in a reciprocating engine
- the barrel of a pump
- on a printing press, a roller carrying the printing plates or the part receiving the impression
- a large, hollow, cylindrical clay object with cuneiform inscriptions, or a similar small stone worn on the wrist in ancient times in the Middle East
Origin: French cylindre ; from Classical Latin cylindrus ; from Classical Greek kylindros ; from kylindein, to roll ; from Indo-European base an unverified form (s)kel-, to bend from source calcar, colon
cylinder definition by American Heritage Dictionary
- Mathematics a. 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.b. The portion of such a surface bounded by two parallel planes and the regions of the planes bounded by the surface.c. A solid bounded by two parallel planes and such a surface, especially such a surface having a circle as its directrix.
- A cylindrical container or object.
- Engineering a. The chamber in which a piston of a reciprocating engine moves.b. The chamber of a pump from which fluid is expelled by a piston.
- The rotating chamber of a revolver that holds the cartridges.
- Any of several rotating parts in a printing press, especially one that carries the paper.
- Archaeology A cylindrical stone or clay object with an engraved design or inscription.
Origin: Latin cylindrus, from Greek kulindros, from kulindein, to roll.
To calculate the volume of a right circular cylinder, multiply the area of the base by the altitude.
cylinder - Computer Definition
The aggregate of all tracks that reside in the same location on every disk surface. On multiple-platter disks, the cylinder is the sum total of every track with the same track number on every surface. On a floppy disk, a cylinder comprises the top and corresponding bottom track. When storing data, the operating system fills an entire cylinder before moving to the next one. The access arm remains stationary until all the tracks in the cylinder have been read or written.
cylinder - Medical Definition
- 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.
cylinder - Phrases/Idioms
cylinder - Science Definition
The equation for determining the volume (V) of a cylinder is V = πr2h.