function

the kind of action or activity proper to a person, thing, or institution; the purpose for which something is designed or exists; role.

any ceremonious public or social gathering or occasion.

a factor related to or dependent upon other factors.

Mathematics.��

1. Also called correspondence, map, mapping, transformation.��a relation between two sets in which one element of the second set is assigned to each element of the first set, as the expression y = x 2 ; operator.

2. Also called multiple-value function.��a relation between two sets in which two or more elements of the second set are assigned to each element of the first set, as y 2 = x 2 , which assigns to every x the two values y = + x and y = − x.

3. a set of ordered pairs in which none of the first elements of the pairs appears twice.

4. a relationship in which an input value of a variable has a specifically calculated output value: for example, if the function of x is x 2 , the output will always be the square of whatever the value of x is. f, F

Geometry.��

1. a formula expressing a relation between the angles of a triangle and its sides, as sine or cosine.

2. hyperbolic function.

Grammar.��

1. the grammatical role a linguistic form has or the position it occupies in a particular construction.

2. the grammatical roles or the positions of a linguistic form or form class collectively.

Sociology.��the contribution made by a sociocultural phenomenon to an ongoing social system.

to perform a specified action or activity; work; operate.

to have or exercise a function; serve.