Pandemic

adj. extensive, comprehensive, sweeping; widespread, universal, general; widely epidemic

n. plague, epidemic disease that spreads throughout a large area

A pandemic (from Greek παν pan all + δήμος demos people) is an epidemic that spreads through human populations across a large region (for example a continent), or even worldwide.
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Pandemic /pan·dem·ic/ 1. a widespread epidemic of a disease. 2. widely epidemic. pan·dem·ic adj. Epidemic over a wide geographic area. n. [more]Pandemic - Community and Resources

Noun
1. an epidemic that is geographically widespread; occurring throughout a region or even throughout the world
(hypernym) epidemic
Adjective
1. epidemic over a wide geographical area; "a pandemic outbreak of malaria"
(similar) epidemic
2. existing everywhere; "pandemic fear of nuclear war"
(similar) general

(n.)
A pandemic disease.
  

(a.)
Affecting a whole people or a number of countries; everywhere epidemic.