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Noun: activity  ak'ti-vu-tee
  1. Any specific behaviour
    "they avoided all recreational activity"
     
  2. The state of being active
    "his sphere of activity";
    - action, activeness
     
  3. An organic process that takes place in the body
    "respiratory activity";
    - bodily process, body process, bodily function
     
  4. (chemistry) the capacity of a substance to take part in a chemical reaction
    "catalytic activity"
     
  5. A process existing in or produced by nature (rather than by the intent of human beings)
    "volcanic activity";
    - natural process, natural action, action
     
  6. The trait of being active; moving or acting rapidly and energetically
    "the level of activity declines with age";
    - activeness

Derived forms: activities

See also: active, inactive

Type of: act, biological process, capability, capacity, deed, human action, human activity, organic process, physical process, process, state, trait

Antonym: inactivity

Encyclopedia: Activity