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Chronic is defined as relating to an injury, illness, or medical condition that is characterized by long duration or frequent recurrence. Diabetes and hypertension are chronic diseases. Chronic is the opposite of acute. [1][2]


  1. Donche, Dan (2008). FF Trainer Certification Guide. USA: Fatal Fitness. 
  2. The American Heritage® Science Dictionary (n.d.). Chronic. Retrieved on 2008-08-11.