Definition of epidemic noun from the Oxford Advanced American Dictionary

     

    epidemic

     noun
    noun
    NAmE//ˌɛpəˈdɛmɪk//
     
     
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  1. 1a large number of cases of a particular disease happening at the same time in a particular community the outbreak of a flu epidemic an epidemic of measles Effectively, tobacco companies will be exporting an epidemic of smoking-related diseases, the campaign suggests.
  2. 2a sudden rapid increase in how often something bad happens an epidemic of crime in the inner cities
epidemicadjective
 
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Car theft is now reaching epidemic proportions. compare pandemic