Definition of function noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈfʌŋkʃn//
    ; NAmE NAmE//ˈfʌŋkʃn//
    Mathematical terminology, Computer programming
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  1. 1  [countable, uncountable] a special activity or purpose of a person or thing to fulfil/perform a function bodily functions (= for example eating, sex, using the toilet) The function of the heart is to pump blood through the body. This design aims for harmony of form and function.
  2. 2  [countable] a social event or official ceremony The hall provided a venue for weddings and other functions. There are numerous functions in aid of charity.
  3. 3 [countable] (mathematics) a quantity whose value depends on the varying values of others. In the statement 2x=y, y is a function of x. (figurative) Salary is a function of age and experience. See related entries: Mathematical terminology
  4. 4 [countable] (computing) a part of a program, etc. that performs a basic operation See related entries: Computer programming
  5. Word Originmid 16th cent.: from French fonction, from Latin functio(n-), from fungi ‘perform’.Extra examples Fortunately, his head injuries left his bodily functions unimpaired. The club serves a useful function as a meeting place. The committee has a dual function, both advisory and regulatory. The couple attended a charity function in aid of cancer research. The reception will be held in the hotel’s function room. He and his wife were guests of honour at a function held by the society last weekend. The committee performs a useful function despite not having executive powers. What is your function in the department?
See the Oxford Advanced American Dictionary entry: function