Function (noun) Definition, Meaning & Examples

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noun
  1. the kind of action or activity proper to a person, thing, or institution; the purpose for which something is designed or exists; role.
  2. any ceremonious public or social gathering or occasion.
  3. a factor related to or dependent upon other factors: Price is a function of supply and demand.
  4. Mathematics.
    • 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 = x2; operator.
    • 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 y2 = x2, which assigns to every x the two values y = +x and y = −x.
    • a set of ordered pairs in which none of the first elements of the pairs appears twice.
    • a relationship in which an input value of a variable has a specifically calculated output value: for example, if the function of x is x2, the output will always be the square of whatever the value of x is. Abbreviations: f, F
  5. Geometry.
    • a formula expressing a relation between the angles of a triangle and its sides, as sine or cosine.
    • hyperbolic function.
  6. Grammar.
    • the grammatical role a linguistic form has or the position it occupies in a particular construction.
    • the grammatical roles or the positions of a linguistic form or form class collectively.
  7. the contribution made by a sociocultural phenomenon to an ongoing social system.
verb (used without object)
  1. to perform a specified action or activity; work; operate: The computer isn't functioning now. He rarely functions before noon.
  2. to have or exercise a function; serve: In earlier English the present tense often functioned as a future. This orange crate can function as a chair.
noun
  1. the natural action or intended purpose of a person or thing in a specific role
  2. an official or formal social gathering or ceremony
  3. a factor dependent upon another or other factors
  4. a relation between two sets that associates a unique element (the value) of the second (the range) with each element (the argument) of the first (the domain): a many-one relation. Symbol: f(x) The value of f(x) for x = 2 is f(2)
verb (intr)
  1. to operate or perform as specified; work properly
  2. to perform the action or role (of something or someone else)
    Function (noun) Definition, Meaning & Examples

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