function

noun

1.
(mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function)
map mapping mathematical function single-valued function
2.
what something is used for
purpose role use
Derived from:
function
3.
the actions and activities assigned to or required or expected of a person or group
sted office part role
Derived from:
function
4.
a relation such that one thing is dependent on another
5.
a formal or official social gathering or ceremony
brooking
6.
7.
a set sequence of steps, part of larger computer program
procedure routine subprogram subroutine