World English Dictionary
cylinder (ˈsɪlɪndə)
1.  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
2.  a surface formed by a line moving round a closed plane curve at a fixed angle to it
3.  any object shaped like a cylinder
4.  See also cylinder block the chamber in a reciprocating internal-combustion engine, pump, or compressor within which the piston moves
5.  the rotating mechanism of a revolver, situated behind the barrel and containing cartridge chambers
6.  printing any of the rotating drums on a printing press
7.  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
8.  (Brit) Also called: hot-water cylinder a vertical cylindrical tank for storing hot water, esp an insulated one made of copper used in a domestic hot-water system
9.  firing on all cylinders working or performing at full capability
10.  (tr) to provide (a system) with cylinders
[C16: from Latin cylindrus, from Greek kulindros a roller, from kulindein to roll]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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