• A recreational pursuit or pastime
  • Actions taken by a group in order to achieve their aims
  • The degree to which something displays its characteristic property or behavior
  • A thermodynamic quantity representing the effective concentration of a particular component in a solution or other system, equal to its concentration multiplied by an activity coefficient
  • the state of being active [n ACTIVITIES]
  • The condition in which things are happening or being done
  • Busy or vigorous action or movement
  • A thing that a person or group does or has done
  • brisk action or movement [n ACTIVITIES]