Mechanism may refer to:

• Mechanism (technology), some technical aspect of a larger process or device, cf. machine
• Mechanism (philosophy), a theory that all natural phenomena can be explained by physical causes
• Mechanism (horology), a piece of a time-keeping device
• Mechanism (sociology), a set of rules designed to bring about a certain outcome
• Mechanism of action, the means by which a drug exerts its biological effects

See also

• Defence mechanism, unconscious mechanisms aimed at reducing anxiety
• Reaction mechanism, the sequence of reactions by which overall chemical change occurs

Mecanisme | Mechanismus | سازوکار