1. activism a policy of action to achieve a political or social goal
  2. estival (rare) of or occurring in summer
  3. positivism a quality or state characterized by certainty or acceptance or affirmation and dogmatic assertiveness
  4. atavism a reappearance of an earlier characteristic
  5. recidivism habitual relapse into crime
  6. estivate sleep during summer
  7. nativism the policy of perpetuating native cultures
  8. seed vessel the ripened and variously modified walls of a plant ovary
  9. estivation cessation or slowing of activity during the summer
  10. aestivate sleep during summer
  11. active site the part of an enzyme or antibody where the chemical reaction occurs
  12. digestive system the system that makes food absorbable into the body
  13. relativism the doctrine that judgment is based on situational context
  14. Activase a thrombolytic agent (trade name Activase) that causes fibrinolysis at the site of a blood clot; used in treating acute myocardial infarction
  15. activist a militant reformer
  16. aestivation cessation or slowing of activity during the summer
  17. waste of time the devotion of time to a useless activity
  18. assess estimate the nature, quality, ability or significance of
  19. restiveness the anxious feeling you have when you have the jitters
  20. negativism characterized by habitual skepticism and a disagreeable tendency to deny or oppose or resist suggestions or commands

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