cylinder

/ˈsɪlɪndər/
noun
  1. A solid or hollow shape with straight sides and two circular ends of the same size, like a can or a tube.
    • The soup comes in a metal cylinder that you open with a pull tab.
    • The storage tank is a large cylinder made of reinforced steel.
    • She drew a cylinder on the board to explain the volume formula.
  2. The part of an engine where a piston moves up and down, creating power.
    • If one cylinder fails, the engine will run roughly.
    • A car with a V8 engine has eight cylinders arranged in a V shape.
    • The mechanic checked each cylinder for signs of wear.
  3. A metal container that holds compressed gas, such as oxygen or propane.
    • The hospital stores medical gas cylinders in a special room.
    • The scuba diver carried an oxygen cylinder on her back.
    • We need to replace the propane cylinder for the barbecue grill.
  4. A rotating part of a machine, such as in a printing press or a record player.
    • Early phonographs played sound from a wax cylinder.
    • The old printing press uses a cylinder to transfer ink onto paper.
    • The roller cylinder in the conveyor belt needs lubrication.
Antonyms
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