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verb [intransitive] British English pronunciation: function /ˈfʌŋkʃ(ə)n/ 
Word Forms
present tense
present participlefunctioning
past tensefunctioned
past participlefunctioned
  1. 1
    to work or operate in the correct or normal way

    His new kidney began functioning immediately.

    a functioning communications system

    1. a.
      to work or operate in a particular way

      We need to get this department functioning efficiently.

  2. 2
    to operate in the same way as something else
    function as:

    a phrase that functions as an adverb

  3. 3
    to do all the things that you normally do

    Some patients cannot function without their drugs.

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