cylinder (ˈsɪlɪndə) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) |
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| —n |
| 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 |
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| —vb |
| 10. | (tr) to provide (a system) with cylinders |
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| [C16: from Latin cylindrus, from Greek kulindros a roller, from kulindein to roll] |
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| 'cylinder-like |
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| —adj |