Definition of average noun from the Oxford Advanced American Dictionary

     

    average

     noun
    noun
    NAmE//ˈævrɪdʒ//
     
    [countable, uncountable]
     
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  1. 1 the result of adding several amounts together, finding a total, and dividing the total by the number of amounts The average of 4, 5, and 9 is 6. Parents spend an average of$220 a year on toys. If I get an A on this essay, that will bring my average (= average grade) up to a B+. see also grade point average
  2. 2a level that is usual Temperatures are above/below average for the time of year. 400 people a year die of this disease on average. Class sizes in the school are below the national average.
  3. Idioms
    the law of averages
     
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    the principle that one thing will happen as often as another if you try enough times Keep looking, and by the law of averages you'll find a job sooner or later.
See the Oxford Advanced Learner's Dictionary entry: average