Longman Dictionary of Contemporary English homepage

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

cylinder

noun
     
Related topics: Shapes, Patterns, Engineering
cyl‧in‧der [countable]
1CF a shape, object, or container with circular ends and long straight sides [↪ tube]:
The gases are stored in cylinders.
2TE 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.

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary