1. the atomic process that occurs during a chemical reaction

- he determined unique mechanisms for the photochemical reactions

Definition categories: process

2. the technical aspects of doing something

- a mechanism of social control

- mechanisms of communication

- the mechanics of prose style

Similar word(s): mechanics

Definition categories: act, execution, performance

3. a natural object resembling a machine in structure or function

- the mechanism of the ear

- the mechanism of infection

Definition categories: object

4. (philosophy) the philosophical theory that all phenomena can be explained in terms of physical or biological causes

Definition categories: thought

5. device consisting of a piece of machinery; has moving parts that perform some function

Definition categories: man–made, device