1. Noun.  A widespread disease that affects many individuals in a population.
  2. Noun.  (context, Epidemiology) An occurrence of a disease or disorder in a population at a frequency higher than that expected in a given time period.
  3. Adjective.  Like or having to do with an epidemic; widespread.

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This entry was last updated on RefTopia from its source on 3/20/2012.