Definition of mechanisms:
(n) :
(within a machine or machinery) Any mechanical means for the conversion or control of motion, or the transmission or control of power.
(n) :
Any combination of cams, gears, links, belts, chains and logical mechanical elements.
(n) :
A group of entities, such as objects, that interact together.
(n) :
Any process of, or system designed to manage useful energy conversion.
(n) :
A mental, physical, or chemical process.
(n) :
(philosophy) The theory that all natural phenomena can be explained by physical causes.