A furnace/combustion chamber in which finely ground fuel is blown in spirals in the combustion chamber to maximize combustion efficiency.
Cylinder
(1) A solid figure described by the edge of a rectangle rotated around the parallel edge as axis; the ends of a cylinder are parallel and equal circles. (2) The chamber in which the piston moves in a reciprocating engine. (3) Pressurized container used to store or transport gases.
Cylinder head
The closed end, usually detachable, of a cylinder in an internal-combustion engine.
Cylinder lock
Door lock whose tumblers are enclosed in a cylinder. The tumblers are aligned with a key, allowing the lock to be turned.
Cylindrical
Cylinder shaped.
Cylindroid
Solid figure, which is cylinder, shaped.
Cyma
Molding which has both a convex and concave curve. Cyma recta is when the double curvature profile has the concave portion protruding past the convex portion. Cyma reversa has the convex portion protruding past the concave portion.
Cymatium
Top portion of a classical cornice. Topping of an entablature, which is a horizontal superstructure that is composed of architrave, frieze and cornice and supported by columns.
Cyme
A flat-topped or domed flower head in which the flowers at the center open first.
Cypress
Wood from a type of evergreen tree, which is weather and rot resistant.
