noun cyl·in·der \ˈsi-lən-dər\

Definition of CYLINDER

a :  the surface traced by a straight line moving parallel to a fixed straight line and intersecting a fixed planar closed curve
b :  a solid or surface bounded by a cylinder and two parallel planes cutting all its elements; especially :  right circular cylinder — see volume table
:  a cylindrical body or space: as
a :  the turning chambered breech of a revolver
b (1) :  the piston chamber in an engine
(2) :  a chamber in a pump from which the piston expels the fluid
c :  any of various rotating members in a press (as a printing press); especially :  one that impresses paper on an inked form
d :  a cylindrical clay object inscribed with cuneiform inscriptions
cyl·in·dered \-dərd\ adjective
on all cylinders
:  with maximum effort or intensity :  at full capacity or speed <the economy is running on all cylinders>

Examples of CYLINDER

  1. the cylinder of a revolver

Origin of CYLINDER

Middle French or Latin; Middle French cylindre, from Latin cylindrus, from Greek kylindros, from kylindein to roll; perhaps akin to Greek kyklos wheel — more at wheel
First Known Use: 1570

Other Mathematics and Statistics Terms

abscissa, denominator, divisor, equilateral, exponent, hypotenuse, logarithm, oblique, radii, rhomb
CYLINDERED Defined for Kids


noun cyl·in·der \ˈsi-lən-dər\

Definition of CYLINDER for Kids

:  a long round body whether hollow or solid


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