Meaning of CYLINDER in English

CYLINDER

cyl ‧ in ‧ der /ˈsɪləndə, ˈsɪlɪndə $ -ər/ BrE AmE noun [countable]

[ Date: 1500-1600 ; Language: Latin ; Origin: cylindrus , from Greek , from kylindein 'to roll' ]

1 . a shape, object, or container with circular ends and long straight sides ⇨ tube :

The gases are stored in cylinders.

2 . the tube within which a ↑ piston moves forwards and backwards in an engine:

a four-cylinder engine

3 . be firing/running on all cylinders informal to be operating or performing very well:

The team is firing on all cylinders.

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THESAURUS

■ types of shapes

▪ square a shape with four straight sides that are equal in length and four angles of 90 degrees

▪ circle a round shape that is like an O

▪ semicircle half a circle

▪ triangle a shape with three straight sides and three angles

▪ rectangle a shape with four straight sides and four angles of 90 degrees

▪ oval a shape like a circle, but that is longer than it is wide

▪ cylinder an object in the shape of a tube

▪ cube a solid object with six equal square sides

▪ pyramid a shape with a square base and four triangular sides that meet in a point at the top

▪ sphere a shape like a ball

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.