Definition of activity noun from the Oxford Advanced American Dictionary

      

    activity

     noun
    noun
    NAmE//ækˈtɪvət̮i//
     
    (pl. activities)
     
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  1. 1[uncountable] a situation in which something is happening or a lot of things are being done economic activity The streets were noisy and full of activity. Muscles contract and relax during physical activity. compare inactive
  2. 2[countable, usually plural] a thing that you do for interest or pleasure, or in order to achieve a particular aim leisure/outdoor/classroom activities The club provides a wide variety of activities including tennis, swimming, and squash. illegal/criminal activities
  3. Idioms
    a beehive/hive of activity
     
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    a place full of people who are busy
See the Oxford Advanced Learner's Dictionary entry: activity

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