- mechanism, chemical mechanism - the atomic process that occurs during a chemical reaction; "he determined unique mechanisms for the photochemical reactions"
--1 is a kind of chemical process, chemical change, chemical action
--1 has particulars: biochemical mechanism - mechanism, mechanics - the technical aspects of doing something; "a mechanism of social control"; "mechanisms of communication"; "the mechanics of prose style"
--2 is a kind of performance, execution, carrying out, carrying into action
- mechanism - a natural object resembling a machine in structure or function; "the mechanism of the ear"; "the mechanism of infection"
--3 is a kind of natural object
--3 has particulars: barrier; transmission mechanism; biological clock- mechanism - (philosophy) the philosophical theory that all phenomena can be explained in terms of physical or biological causes
--4 is a kind of philosophical doctrine, philosophical theory
- mechanism - device consisting of a piece of machinery; has moving parts that perform some function
--5 is a kind of device
--5 has particulars: - mechanism - (philosophy) the philosophical theory that all phenomena can be explained in terms of physical or biological causes