In some scientific or technical contexts, a Deterministic relation between two quantities or phenomena, e.g. by definition, by design, or by a natural Cause-and-effect Connection .
In of multiple functions. For example, the main function of a clock, the presentation of time, can be realized by different physical processes, including atomic, electronic, and mechanical processes. In many cases, this concept is also used in a metaphoric sense, for example, by attributing a goal to the Natural Selection processes.
In Physics , the concept function exists only in the mathematical sense because the concept Goal does not exist. However if we change the application/use of an object, it may change dramatically functions without changing any of its own physical properties.
In music, the role ('''.
OTHER MEANING
Functionary , someone who carries out a particular role within an organisation; a close synonym for official