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Adjective: nationwide  'ney-shun,wId
  1. Occurring or extending throughout a country or nation
    "the event aroused nationwide interest";
    - countrywide
Adverb: nationwide  'ney-shun,wId
  1. Extending throughout an entire nation
    "it was broadcast nationwide";
    - nationally, across the nation, across the country

See also: comprehensive

Encyclopedia: Nationwide