cylinder

cylinder
cylinder [sil′ən dər]
n.
[Fr cylindre < L cylindrus < Gr kylindros < kylindein, to roll < IE base * (s)kel-, to bend > CALCAR, COLON1]
1. Geom.
a) in geometry, a solid figure consisting of two parallel bases in the form of congruent, closed curves joined by a smooth, continuous, closed surface; specif., such a figure (right circular cylinder) having circular bases and a surface perpendicular to the bases
b) the surface of such a solid
2. anything having the shape of a cylinder, whether hollow or solid; specif.,
a) the turning part of a revolver, containing chambers for cartridges
b) the chamber in which the piston moves in a reciprocating engine
c) the barrel of a pump
d) on a printing press, a roller carrying the printing plates or the part receiving the impression
e) a large, hollow, cylindrical clay object with cuneiform inscriptions, or a similar small stone worn on the wrist in ancient times in the Middle East

English World dictionary. . 2014.

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